Mon, 26 Nov 2001 21:22:56 +0000
[gaim-migrate @ 2805]
Arkadiusz Miskiewicz's updates to Gadu-Gadu
committer: Eric Warmenhoven <warmenhoven@yahoo.com>
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1 | /* $Id: libgg.c 2805 2001-11-26 21:22:56Z warmenhoven $ */ |
| 2393 | 2 | |
| 3 | /* | |
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4 | * (C) Copyright 2001 Wojtek Kaniewski <wojtekka@irc.pl>, |
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5 | * Robert J. Woźny <speedy@atman.pl> |
| 2393 | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License Version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <stdio.h> | |
| 22 | #include <stdlib.h> | |
| 23 | #include <unistd.h> | |
| 24 | #include <stdio.h> | |
| 25 | #include <sys/socket.h> | |
| 26 | #include <netinet/in.h> | |
| 27 | #include <arpa/inet.h> | |
| 28 | #include <sys/ioctl.h> | |
| 29 | #include <sys/wait.h> | |
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30 | #include <sys/time.h> |
| 2393 | 31 | #include <netdb.h> |
| 32 | #include <errno.h> | |
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33 | #ifndef _AIX |
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34 | # include <string.h> |
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35 | #endif |
| 2393 | 36 | #include <stdarg.h> |
| 37 | #include <pwd.h> | |
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38 | #include <time.h> |
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39 | #ifdef sun |
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40 | #include <sys/filio.h> |
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41 | #endif |
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42 | #include <glib.h> |
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43 | #if G_BYTE_ORDER == G_BIG_ENDIAN |
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44 | # define WORDS_BIGENDIAN 1 |
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45 | #endif |
| 2393 | 46 | #include "libgg.h" |
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47 | #include "config.h" |
| 2393 | 48 | |
| 49 | int gg_debug_level = 0; | |
| 50 | ||
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51 | #ifndef lint |
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52 | |
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53 | static char rcsid[] |
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54 | #ifdef __GNUC__ |
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55 | __attribute__ ((unused)) |
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56 | #endif |
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57 | = "$Id: libgg.c 2805 2001-11-26 21:22:56Z warmenhoven $"; |
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58 | |
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59 | #endif |
| 2393 | 60 | |
| 61 | /* | |
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62 | * gg_debug() |
| 2393 | 63 | * |
| 64 | * wyrzuca komunikat o danym poziomie, o ile użytkownik sobie tego życzy. | |
| 65 | * | |
| 66 | * - level - poziom wiadomości, | |
| 67 | * - format... - treść wiadomości (printf-alike.) | |
| 68 | * | |
| 69 | * niczego nie zwraca. | |
| 70 | */ | |
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71 | void gg_debug(int level, char *format, ...) |
| 2393 | 72 | { |
| 73 | va_list ap; | |
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74 | |
| 2393 | 75 | if ((gg_debug_level & level)) { |
| 76 | va_start(ap, format); | |
| 77 | vprintf(format, ap); | |
| 78 | va_end(ap); | |
| 79 | } | |
| 80 | } | |
| 81 | ||
| 82 | /* | |
| 83 | * fix32() // funkcja wewnętrzna | |
| 84 | * | |
| 85 | * dla maszyn big-endianowych zamienia kolejność bajtów w ,,long''ach. | |
| 86 | */ | |
| 87 | static inline unsigned long fix32(unsigned long x) | |
| 88 | { | |
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89 | #ifndef WORDS_BIGENDIAN |
| 2393 | 90 | return x; |
| 91 | #else | |
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92 | return (unsigned long) |
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93 | (((x & (unsigned long)0x000000ffU) << 24) | |
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94 | ((x & (unsigned long)0x0000ff00U) << 8) | |
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95 | ((x & (unsigned long)0x00ff0000U) >> 8) | ((x & (unsigned long)0xff000000U) >> 24)); |
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96 | #endif |
| 2393 | 97 | } |
| 98 | ||
| 99 | /* | |
| 100 | * fix16() // funkcja wewnętrzna | |
| 101 | * | |
| 102 | * dla maszyn big-endianowych zamienia kolejność bajtów w ,,short''ach. | |
| 103 | */ | |
| 104 | static inline unsigned short fix16(unsigned short x) | |
| 105 | { | |
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106 | #ifndef WORDS_BIGENDIAN |
| 2393 | 107 | return x; |
| 108 | #else | |
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109 | return (unsigned short) |
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110 | (((x & (unsigned short)0x00ffU) << 8) | ((x & (unsigned short)0xff00U) >> 8)); |
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111 | #endif |
| 2393 | 112 | } |
| 113 | ||
| 114 | /* | |
| 115 | * gg_alloc_sprintf() // funkcja wewnętrzna | |
| 116 | * | |
| 117 | * robi dokładnie to samo, co sprintf(), tyle że alokuje sobie wcześniej | |
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118 | * miejsce na dane. powinno działać na tych maszynach, które mają funkcję |
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119 | * vsnprintf() zgodną z C99, jak i na wcześniejszych. |
| 2393 | 120 | * |
| 121 | * - format, ... - parametry takie same jak w innych funkcjach *printf() | |
| 122 | * | |
| 123 | * zwraca zaalokowany buforek, który wypadałoby później zwolnić, lub NULL | |
| 124 | * jeśli nie udało się wykonać zadania. | |
| 125 | */ | |
| 126 | char *gg_alloc_sprintf(char *format, ...) | |
| 127 | { | |
| 128 | va_list ap; | |
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129 | char *buf = NULL, *tmp; |
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130 | int size = 0, res; |
| 2393 | 131 | |
| 132 | va_start(ap, format); | |
| 133 | ||
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134 | if ((size = vsnprintf(buf, 0, format, ap)) < 1) { |
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135 | size = 128; |
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136 | do { |
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137 | size *= 2; |
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138 | if (!(tmp = realloc(buf, size))) { |
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139 | free(buf); |
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140 | return NULL; |
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141 | } |
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142 | buf = tmp; |
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143 | res = vsnprintf(buf, size, format, ap); |
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144 | } while (res == size - 1); |
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145 | } else { |
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146 | if (!(buf = malloc(size + 1))) |
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147 | return NULL; |
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148 | } |
| 2393 | 149 | |
| 150 | vsnprintf(buf, size + 1, format, ap); | |
| 151 | ||
| 152 | va_end(ap); | |
| 153 | ||
| 154 | return buf; | |
| 155 | } | |
| 156 | ||
| 157 | /* | |
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158 | * gg_get_line() // funkcja wewnętrzna |
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159 | * |
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160 | * podaje kolejną linię z bufora tekstowego. psuje co bezpowrotnie, dzieląc |
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161 | * na kolejne stringi. zdarza się, nie ma potrzeby pisania funkcji dublującej |
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162 | * bufor żeby tylko mieć nieruszone dane wejściowe, skoro i tak nie będą nam |
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163 | * poźniej potrzebne. obcina `\r\n'. |
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164 | * |
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165 | * - ptr - wskaźnik do zmiennej, która przechowuje aktualną pozycję |
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166 | * w przemiatanym buforze. |
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167 | * |
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168 | * wskaźnik do kolejnej linii tekstu lub NULL, jeśli to już koniec bufora. |
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169 | */ |
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170 | char *gg_get_line(char **ptr) |
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171 | { |
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172 | char *foo, *res; |
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173 | |
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174 | if (!ptr || !*ptr || !strcmp(*ptr, "")) |
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175 | return NULL; |
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176 | |
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177 | res = *ptr; |
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178 | |
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179 | if (!(foo = strchr(*ptr, '\n'))) |
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180 | *ptr += strlen(*ptr); |
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181 | else { |
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182 | *ptr = foo + 1; |
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183 | *foo = 0; |
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184 | if (res[strlen(res) - 1] == '\r') |
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185 | res[strlen(res) - 1] = 0; |
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186 | } |
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187 | |
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188 | return res; |
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189 | } |
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190 | |
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191 | /* |
| 2393 | 192 | * gg_resolve() // funkcja wewnętrzna |
| 193 | * | |
| 194 | * tworzy pipe'y, forkuje się i w drugim procesie zaczyna resolvować | |
| 195 | * podanego hosta. zapisuje w sesji deskryptor pipe'u. jeśli coś tam | |
| 196 | * będzie gotowego, znaczy, że można wczytać ,,struct in_addr''. jeśli | |
| 197 | * nie znajdzie, zwraca INADDR_NONE. | |
| 198 | * | |
| 199 | * - fd - wskaźnik gdzie wrzucić deskryptor, | |
| 200 | * - pid - gdzie wrzucić pid dzieciaka, | |
| 201 | * - hostname - nazwa hosta do zresolvowania. | |
| 202 | * | |
| 203 | * zwraca 0 jeśli udało się odpalić proces lub -1 w przypadku błędu. | |
| 204 | */ | |
| 205 | int gg_resolve(int *fd, int *pid, char *hostname) | |
| 206 | { | |
| 207 | int pipes[2], res; | |
| 208 | struct in_addr a; | |
| 209 | ||
| 210 | gg_debug(GG_DEBUG_FUNCTION, "** gg_resolve(..., \"%s\");\n", hostname); | |
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211 | |
| 2393 | 212 | if (!fd | !pid) { |
| 213 | errno = EFAULT; | |
| 214 | return -1; | |
| 215 | } | |
| 216 | ||
| 217 | if (pipe(pipes) == -1) | |
| 218 | return -1; | |
| 219 | ||
| 220 | if ((res = fork()) == -1) | |
| 221 | return -1; | |
| 222 | ||
| 223 | if (!res) { | |
| 224 | if ((a.s_addr = inet_addr(hostname)) == INADDR_NONE) { | |
| 225 | struct hostent *he; | |
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226 | |
| 2393 | 227 | if (!(he = gethostbyname(hostname))) |
| 228 | a.s_addr = INADDR_NONE; | |
| 229 | else | |
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230 | memcpy((char *)&a, he->h_addr, sizeof(a)); |
| 2393 | 231 | } |
| 232 | ||
| 233 | write(pipes[1], &a, sizeof(a)); | |
| 234 | ||
| 235 | exit(0); | |
| 236 | } | |
| 237 | ||
| 238 | close(pipes[1]); | |
| 239 | ||
| 240 | *fd = pipes[0]; | |
| 241 | *pid = res; | |
| 242 | ||
| 243 | return 0; | |
| 244 | } | |
| 245 | ||
| 246 | /* | |
| 247 | * gg_connect() // funkcja wewnętrzna | |
| 248 | * | |
| 249 | * łączy się z serwerem. pierwszy argument jest typu (void *), żeby nie | |
| 250 | * musieć niczego inkludować w libgg.h i nie psuć jakiś głupich zależności | |
| 251 | * na dziwnych systemach. | |
| 252 | * | |
| 253 | * - addr - adres serwera (struct in_addr *), | |
| 254 | * - port - port serwera, | |
| 255 | * - async - ma być asynchroniczne połączenie? | |
| 256 | * | |
| 257 | * zwraca połączonego socketa lub -1 w przypadku błędu. zobacz errno. | |
| 258 | */ | |
| 259 | int gg_connect(void *addr, int port, int async) | |
| 260 | { | |
| 261 | int sock, one = 1; | |
| 262 | struct sockaddr_in sin; | |
| 263 | struct in_addr *a = addr; | |
| 264 | ||
| 265 | gg_debug(GG_DEBUG_FUNCTION, "** gg_connect(%s, %d, %d);\n", inet_ntoa(*a), port, async); | |
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266 | |
| 2393 | 267 | if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) { |
| 268 | gg_debug(GG_DEBUG_MISC, "-- socket() failed. errno = %d (%s)\n", errno, strerror(errno)); | |
| 269 | return -1; | |
| 270 | } | |
| 271 | ||
| 272 | if (async) { | |
| 273 | if (ioctl(sock, FIONBIO, &one) == -1) { | |
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274 | gg_debug(GG_DEBUG_MISC, "-- ioctl() failed. errno = %d (%s)\n", errno, |
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275 | strerror(errno)); |
| 2393 | 276 | return -1; |
| 277 | } | |
| 278 | } | |
| 279 | ||
| 280 | sin.sin_port = htons(port); | |
| 281 | sin.sin_family = AF_INET; | |
| 282 | sin.sin_addr.s_addr = a->s_addr; | |
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283 | |
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284 | if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) { |
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285 | if (errno && (!async || errno != EINPROGRESS)) { |
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286 | gg_debug(GG_DEBUG_MISC, "-- connect() failed. errno = %d (%s)\n", errno, |
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287 | strerror(errno)); |
| 2393 | 288 | return -1; |
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289 | } |
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290 | gg_debug(GG_DEBUG_MISC, "-- connect() in progress\n"); |
| 2393 | 291 | } |
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292 | |
| 2393 | 293 | return sock; |
| 294 | } | |
| 295 | ||
| 296 | /* | |
| 297 | * gg_read_line() // funkcja wewnętrzna | |
| 298 | * | |
| 299 | * czyta jedną linię tekstu z socketa. | |
| 300 | * | |
| 301 | * - sock - socket, | |
| 302 | * - buf - wskaźnik bufora, | |
| 303 | * - length - długość bufora. | |
| 304 | * | |
| 305 | * olewa błędy. jeśli na jakiś trafi, potraktuje go jako koniec linii. | |
| 306 | */ | |
| 307 | static void gg_read_line(int sock, char *buf, int length) | |
| 308 | { | |
| 309 | int ret; | |
| 310 | ||
| 311 | gg_debug(GG_DEBUG_FUNCTION, "** gg_read_line(...);\n"); | |
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312 | |
| 2393 | 313 | for (; length > 1; buf++, length--) { |
| 314 | do { | |
| 315 | if ((ret = read(sock, buf, 1)) == -1 && errno != EINTR) { | |
| 316 | *buf = 0; | |
| 317 | return; | |
| 318 | } | |
| 319 | } while (ret == -1 && errno == EINTR); | |
| 320 | ||
| 321 | if (*buf == '\n') { | |
| 322 | buf++; | |
| 323 | break; | |
| 324 | } | |
| 325 | } | |
| 326 | ||
| 327 | *buf = 0; | |
| 328 | return; | |
| 329 | } | |
| 330 | ||
| 331 | /* | |
| 332 | * gg_recv_packet() // funkcja wewnętrzna | |
| 333 | * | |
| 334 | * odbiera jeden pakiet gg i zwraca wskaźnik do niego. pamięć po nim | |
| 335 | * wypadałoby uwolnić. | |
| 336 | * | |
| 337 | * - sock - połączony socket. | |
| 338 | * | |
| 339 | * jeśli wystąpił błąd, zwraca NULL. reszta w errno. | |
| 340 | */ | |
| 341 | static void *gg_recv_packet(struct gg_session *sess) | |
| 342 | { | |
| 343 | struct gg_header h; | |
| 344 | char *buf = NULL; | |
| 345 | int ret = 0, offset, size = 0; | |
| 346 | ||
| 347 | gg_debug(GG_DEBUG_FUNCTION, "** gg_recv_packet(...);\n"); | |
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348 | |
| 2393 | 349 | if (!sess) { |
| 350 | errno = EFAULT; | |
| 351 | return NULL; | |
| 352 | } | |
| 353 | ||
| 354 | if (sess->recv_left < 1) { | |
| 355 | while (ret != sizeof(h)) { | |
| 356 | ret = read(sess->fd, &h, sizeof(h)); | |
| 357 | gg_debug(GG_DEBUG_MISC, "-- header recv(..., %d) = %d\n", sizeof(h), ret); | |
| 358 | if (ret < sizeof(h)) { | |
| 359 | if (errno != EINTR) { | |
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360 | gg_debug(GG_DEBUG_MISC, "-- errno = %d (%s)\n", errno, |
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361 | strerror(errno)); |
| 2393 | 362 | return NULL; |
| 363 | } | |
| 364 | } | |
| 365 | } | |
| 366 | ||
| 367 | h.type = fix32(h.type); | |
| 368 | h.length = fix32(h.length); | |
| 369 | } else { | |
| 370 | memcpy(&h, sess->recv_buf, sizeof(h)); | |
| 371 | } | |
| 372 | ||
| 373 | /* jakieś sensowne limity na rozmiar pakietu */ | |
| 374 | if (h.length < 0 || h.length > 65535) { | |
| 375 | gg_debug(GG_DEBUG_MISC, "-- invalid packet length (%d)\n", h.length); | |
| 376 | errno = ERANGE; | |
| 377 | return NULL; | |
| 378 | } | |
| 379 | ||
| 380 | if (sess->recv_left > 0) { | |
| 381 | gg_debug(GG_DEBUG_MISC, "-- resuming last gg_recv_packet()\n"); | |
| 382 | size = sess->recv_left; | |
| 383 | offset = sess->recv_done; | |
| 384 | buf = sess->recv_buf; | |
| 385 | } else { | |
| 386 | if (!(buf = malloc(sizeof(h) + h.length + 1))) { | |
| 387 | gg_debug(GG_DEBUG_MISC, "-- not enough memory\n"); | |
| 388 | return NULL; | |
| 389 | } | |
| 390 | ||
| 391 | memcpy(buf, &h, sizeof(h)); | |
| 392 | ||
| 393 | offset = 0; | |
| 394 | size = h.length; | |
| 395 | } | |
| 396 | ||
| 397 | while (size > 0) { | |
| 398 | ret = read(sess->fd, buf + sizeof(h) + offset, size); | |
| 399 | gg_debug(GG_DEBUG_MISC, "-- body recv(..., %d) = %d\n", size, ret); | |
| 400 | if (ret > -1 && ret <= size) { | |
| 401 | offset += ret; | |
| 402 | size -= ret; | |
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403 | } else if (ret == -1) { |
| 2393 | 404 | gg_debug(GG_DEBUG_MISC, "-- errno = %d (%s)\n", errno, strerror(errno)); |
| 405 | if (errno == EAGAIN) { | |
| 406 | gg_debug(GG_DEBUG_MISC, "-- %d bytes received, %d left\n", offset, size); | |
| 407 | sess->recv_buf = buf; | |
| 408 | sess->recv_left = size; | |
| 409 | sess->recv_done = offset; | |
| 410 | return NULL; | |
| 411 | } | |
| 412 | if (errno != EINTR) { | |
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413 | // errno = EINVAL; |
| 2393 | 414 | free(buf); |
| 415 | return NULL; | |
| 416 | } | |
| 417 | } | |
| 418 | } | |
| 419 | ||
| 420 | sess->recv_left = 0; | |
| 421 | ||
| 422 | if ((gg_debug_level & GG_DEBUG_DUMP)) { | |
| 423 | int i; | |
| 424 | ||
| 425 | gg_debug(GG_DEBUG_DUMP, ">> received packet (type=%.2x):", h.type); | |
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426 | for (i = 0; i < sizeof(h) + h.length; i++) |
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427 | gg_debug(GG_DEBUG_DUMP, " %.2x", (unsigned char)buf[i]); |
| 2393 | 428 | gg_debug(GG_DEBUG_DUMP, "\n"); |
| 429 | } | |
| 430 | ||
| 431 | return buf; | |
| 432 | } | |
| 433 | ||
| 434 | /* | |
| 435 | * gg_send_packet() // funkcja wewnętrzna | |
| 436 | * | |
| 437 | * konstruuje pakiet i wysyła go w do serwera. | |
| 438 | * | |
| 439 | * - sock - połączony socket, | |
| 440 | * - type - typ pakietu, | |
| 441 | * - packet - wskaźnik do struktury pakietu, | |
| 442 | * - length - długość struktury pakietu, | |
| 443 | * - payload - dodatkowy tekst doklejany do pakietu (np. wiadomość), | |
| 444 | * - payload_length - długość dodatkowego tekstu. | |
| 445 | * | |
| 446 | * jeśli poszło dobrze, zwraca 0. w przypadku błędu -1. jeśli errno=ENOMEM, | |
| 447 | * zabrakło pamięci. inaczej był błąd przy wysyłaniu pakietu. dla errno=0 | |
| 448 | * nie wysłano całego pakietu. | |
| 449 | */ | |
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450 | static int gg_send_packet(int sock, int type, void *packet, int length, void *payload, |
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451 | int payload_length) |
| 2393 | 452 | { |
| 453 | struct gg_header *h; | |
| 454 | int res, plen; | |
| 455 | char *tmp; | |
| 456 | ||
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457 | gg_debug(GG_DEBUG_FUNCTION, "** gg_send_packet(0x%.2x, %d, %d);\n", type, length, |
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458 | payload_length); |
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459 | |
| 2393 | 460 | if (length < 0 || payload_length < 0) { |
| 461 | gg_debug(GG_DEBUG_MISC, "-- invalid packet/payload length\n"); | |
| 462 | errno = ERANGE; | |
| 463 | return -1; | |
| 464 | } | |
| 465 | ||
| 466 | if (!(tmp = malloc(sizeof(struct gg_header) + length + payload_length))) { | |
| 467 | gg_debug(GG_DEBUG_MISC, "-- not enough memory\n"); | |
| 468 | return -1; | |
| 469 | } | |
| 470 | ||
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471 | h = (struct gg_header *)tmp; |
| 2393 | 472 | h->type = fix32(type); |
| 473 | h->length = fix32(length + payload_length); | |
| 474 | ||
| 475 | if (packet) | |
| 476 | memcpy(tmp + sizeof(struct gg_header), packet, length); | |
| 477 | if (payload) | |
| 478 | memcpy(tmp + sizeof(struct gg_header) + length, payload, payload_length); | |
| 479 | ||
| 480 | if ((gg_debug_level & GG_DEBUG_DUMP)) { | |
| 481 | int i; | |
| 482 | ||
| 483 | gg_debug(GG_DEBUG_DUMP, "%%%% sending packet (type=%.2x):", fix32(h->type)); | |
| 484 | for (i = 0; i < sizeof(struct gg_header) + fix32(h->length); i++) | |
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485 | gg_debug(GG_DEBUG_DUMP, " %.2x", (unsigned char)tmp[i]); |
| 2393 | 486 | gg_debug(GG_DEBUG_DUMP, "\n"); |
| 487 | } | |
| 488 | ||
| 489 | plen = sizeof(struct gg_header) + length + payload_length; | |
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490 | |
| 2393 | 491 | if ((res = write(sock, tmp, plen)) < plen) { |
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492 | gg_debug(GG_DEBUG_MISC, "-- write() failed. res = %d, errno = %d (%s)\n", res, errno, |
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493 | strerror(errno)); |
| 2393 | 494 | free(tmp); |
| 495 | return -1; | |
| 496 | } | |
| 497 | ||
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498 | free(tmp); |
| 2393 | 499 | return 0; |
| 500 | } | |
| 501 | ||
| 502 | ||
| 503 | /* | |
| 504 | * gg_login() | |
| 505 | * | |
| 506 | * rozpoczyna procedurę łączenia się z serwerem. resztę obsłguje się przez | |
| 507 | * gg_watch_event. | |
| 508 | * | |
| 509 | * - uin - numerek usera, | |
| 510 | * - password - jego hasełko, | |
| 511 | * - async - ma być asynchronicznie? | |
| 512 | * | |
| 513 | * UWAGA! program musi obsłużyć SIGCHLD, jeśli łączy się asynchronicznie, | |
| 514 | * żeby zrobić pogrzeb zmarłemu procesowi resolvera. | |
| 515 | * | |
| 516 | * w przypadku błędu zwraca NULL, jeśli idzie dobrze (async) albo poszło | |
| 517 | * dobrze (sync), zwróci wskaźnik do zaalokowanej struktury `gg_session'. | |
| 518 | */ | |
| 519 | struct gg_session *gg_login(uin_t uin, char *password, int async) | |
| 520 | { | |
| 521 | struct gg_session *sess; | |
| 522 | ||
| 523 | gg_debug(GG_DEBUG_FUNCTION, "** gg_login(%u, \"...\", %d);\n", uin, async); | |
| 524 | ||
| 525 | if (!(sess = malloc(sizeof(*sess)))) | |
| 526 | return NULL; | |
| 527 | ||
| 528 | sess->uin = uin; | |
| 529 | if (!(sess->password = strdup(password))) { | |
| 530 | free(sess); | |
| 531 | return NULL; | |
| 532 | } | |
| 533 | sess->state = GG_STATE_RESOLVING; | |
| 534 | sess->check = GG_CHECK_READ; | |
| 535 | sess->async = async; | |
| 536 | sess->seq = 0; | |
| 537 | sess->recv_left = 0; | |
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538 | sess->last_pong = 0; |
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539 | sess->server_ip = 0; |
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540 | sess->initial_status = 0; |
| 2393 | 541 | |
| 542 | if (async) { | |
| 543 | if (gg_resolve(&sess->fd, &sess->pid, GG_APPMSG_HOST)) { | |
| 544 | gg_debug(GG_DEBUG_MISC, "-- resolving failed\n"); | |
| 545 | free(sess); | |
| 546 | return NULL; | |
| 547 | } | |
| 548 | } else { | |
| 549 | struct in_addr a; | |
| 550 | ||
| 551 | if ((a.s_addr = inet_addr(GG_APPMSG_HOST)) == INADDR_NONE) { | |
| 552 | struct hostent *he; | |
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553 | |
| 2393 | 554 | if (!(he = gethostbyname(GG_APPMSG_HOST))) { |
| 555 | gg_debug(GG_DEBUG_MISC, "-- host %s not found\n", GG_APPMSG_HOST); | |
| 556 | free(sess); | |
| 557 | return NULL; | |
| 558 | } else | |
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559 | memcpy((char *)&a, he->h_addr, sizeof(a)); |
| 2393 | 560 | } |
| 561 | ||
| 562 | if (!(sess->fd = gg_connect(&a, GG_APPMSG_PORT, 0)) == -1) { | |
| 563 | gg_debug(GG_DEBUG_MISC, "-- connection failed\n"); | |
| 564 | free(sess); | |
| 565 | return NULL; | |
| 566 | } | |
| 567 | ||
| 568 | sess->state = GG_STATE_CONNECTING_HTTP; | |
| 569 | ||
| 570 | while (sess->state != GG_STATE_CONNECTED) { | |
| 571 | struct gg_event *e; | |
| 572 | ||
| 573 | if (!(e = gg_watch_fd(sess))) { | |
| 574 | gg_debug(GG_DEBUG_MISC, "-- some nasty error in gg_watch_fd()\n"); | |
| 575 | free(sess); | |
| 576 | return NULL; | |
| 577 | } | |
| 578 | ||
| 579 | if (e->type == GG_EVENT_CONN_FAILED) { | |
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580 | errno = EACCES; |
| 2393 | 581 | gg_debug(GG_DEBUG_MISC, "-- could not login\n"); |
| 582 | gg_free_event(e); | |
| 583 | free(sess); | |
| 584 | return NULL; | |
| 585 | } | |
| 586 | ||
| 587 | gg_free_event(e); | |
| 588 | } | |
| 589 | } | |
| 590 | ||
| 591 | return sess; | |
| 592 | } | |
| 593 | ||
| 594 | /* | |
| 595 | * gg_free_session() | |
| 596 | * | |
| 597 | * zwalnia pamięć zajmowaną przez opis sesji. | |
| 598 | * | |
| 599 | * - sess - opis sesji. | |
| 600 | * | |
| 601 | * nie zwraca niczego, bo i po co? | |
| 602 | */ | |
| 603 | void gg_free_session(struct gg_session *sess) | |
| 604 | { | |
| 605 | if (!sess) | |
| 606 | return; | |
| 607 | ||
| 608 | free(sess->password); | |
| 609 | free(sess); | |
| 610 | } | |
| 611 | ||
| 612 | /* | |
| 613 | * gg_change_status() | |
| 614 | * | |
| 615 | * zmienia status użytkownika. przydatne do /away i /busy oraz /quit. | |
| 616 | * | |
| 617 | * - sess - opis sesji, | |
| 618 | * - status - nowy status użytkownika. | |
| 619 | * | |
| 620 | * jeśli wysłał pakiet zwraca 0, jeśli nie udało się, zwraca -1. | |
| 621 | */ | |
| 622 | int gg_change_status(struct gg_session *sess, int status) | |
| 623 | { | |
| 624 | struct gg_new_status p; | |
| 625 | ||
| 626 | if (!sess) { | |
| 627 | errno = EFAULT; | |
| 628 | return -1; | |
| 629 | } | |
| 630 | ||
| 631 | if (sess->state != GG_STATE_CONNECTED) { | |
| 632 | errno = ENOTCONN; | |
| 633 | return -1; | |
| 634 | } | |
| 635 | ||
| 636 | gg_debug(GG_DEBUG_FUNCTION, "** gg_change_status(..., %d);\n", status); | |
| 637 | ||
| 638 | p.status = fix32(status); | |
| 639 | ||
| 640 | return gg_send_packet(sess->fd, GG_NEW_STATUS, &p, sizeof(p), NULL, 0); | |
| 641 | } | |
| 642 | ||
| 643 | /* | |
| 644 | * gg_logoff() | |
| 645 | * | |
| 646 | * wylogowuje użytkownika i zamyka połączenie. | |
| 647 | * | |
| 648 | * - sock - deskryptor socketu. | |
| 649 | * | |
| 650 | * nie zwraca błędów. skoro się żegnamy, to olewamy wszystko. | |
| 651 | */ | |
| 652 | void gg_logoff(struct gg_session *sess) | |
| 653 | { | |
| 654 | if (!sess) | |
| 655 | return; | |
| 656 | ||
| 657 | gg_debug(GG_DEBUG_FUNCTION, "** gg_logoff(...);\n"); | |
| 658 | ||
| 659 | if (sess->state == GG_STATE_CONNECTED) | |
| 660 | gg_change_status(sess, GG_STATUS_NOT_AVAIL); | |
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661 | |
| 2393 | 662 | if (sess->fd) { |
| 663 | shutdown(sess->fd, 2); | |
| 664 | close(sess->fd); | |
| 665 | } | |
| 666 | } | |
| 667 | ||
| 668 | /* | |
| 669 | * gg_send_message() | |
| 670 | * | |
| 671 | * wysyła wiadomość do innego użytkownika. zwraca losowy numer | |
| 672 | * sekwencyjny, który można olać albo wykorzystać do potwierdzenia. | |
| 673 | * | |
| 674 | * - sess - opis sesji, | |
| 675 | * - msgclass - rodzaj wiadomości, | |
| 676 | * - recipient - numer adresata, | |
| 677 | * - message - treść wiadomości. | |
| 678 | * | |
| 679 | * w przypadku błędu zwraca -1, inaczej numer sekwencyjny. | |
| 680 | */ | |
| 681 | int gg_send_message(struct gg_session *sess, int msgclass, uin_t recipient, unsigned char *message) | |
| 682 | { | |
| 683 | struct gg_send_msg s; | |
| 684 | ||
| 685 | if (!sess) { | |
| 686 | errno = EFAULT; | |
| 687 | return -1; | |
| 688 | } | |
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689 | |
| 2393 | 690 | if (sess->state != GG_STATE_CONNECTED) { |
| 691 | errno = ENOTCONN; | |
| 692 | return -1; | |
| 693 | } | |
| 694 | ||
| 695 | gg_debug(GG_DEBUG_FUNCTION, "** gg_send_message(..., %d, %u, \"...\");\n", msgclass, recipient); | |
| 696 | ||
| 697 | s.recipient = fix32(recipient); | |
| 698 | if (!sess->seq) | |
| 699 | sess->seq = 0x01740000 | (rand() & 0xffff); | |
| 700 | s.seq = fix32(sess->seq); | |
| 701 | s.msgclass = fix32(msgclass); | |
| 702 | sess->seq += (rand() % 0x300) + 0x300; | |
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703 | |
| 2393 | 704 | if (gg_send_packet(sess->fd, GG_SEND_MSG, &s, sizeof(s), message, strlen(message) + 1) == -1) |
| 705 | return -1; | |
| 706 | ||
| 707 | return fix32(s.seq); | |
| 708 | } | |
| 709 | ||
| 710 | /* | |
| 711 | * gg_ping() | |
| 712 | * | |
| 713 | * wysyła do serwera pakiet typu yeah-i'm-still-alive. | |
| 714 | * | |
| 715 | * - sess - zgadnij. | |
| 716 | * | |
| 717 | * jeśli nie powiodło się wysłanie pakietu, zwraca -1. otherwise 0. | |
| 718 | */ | |
| 719 | int gg_ping(struct gg_session *sess) | |
| 720 | { | |
| 721 | if (!sess) { | |
| 722 | errno = EFAULT; | |
| 723 | return -1; | |
| 724 | } | |
| 725 | ||
| 726 | if (sess->state != GG_STATE_CONNECTED) { | |
| 727 | errno = ENOTCONN; | |
| 728 | return -1; | |
| 729 | } | |
| 730 | ||
| 731 | gg_debug(GG_DEBUG_FUNCTION, "** gg_ping(...);\n"); | |
| 732 | ||
| 733 | return gg_send_packet(sess->fd, GG_PING, NULL, 0, NULL, 0); | |
| 734 | } | |
| 735 | ||
| 736 | /* | |
| 737 | * gg_free_event() | |
| 738 | * | |
| 739 | * zwalnia pamięć zajmowaną przez informację o zdarzeniu | |
| 740 | * | |
| 741 | * - event - wskaźnik do informacji o zdarzeniu | |
| 742 | * | |
| 743 | * nie ma czego zwracać. | |
| 744 | */ | |
| 745 | void gg_free_event(struct gg_event *e) | |
| 746 | { | |
| 747 | if (!e) | |
| 748 | return; | |
| 749 | if (e->type == GG_EVENT_MSG) | |
| 750 | free(e->event.msg.message); | |
| 751 | if (e->type == GG_EVENT_NOTIFY) | |
| 752 | free(e->event.notify); | |
| 753 | free(e); | |
| 754 | } | |
| 755 | ||
| 756 | /* | |
| 757 | * gg_notify() | |
| 758 | * | |
| 759 | * wysyła serwerowi listę ludków, za którymi tęsknimy. | |
| 760 | * | |
| 761 | * - sess - identyfikator sesji, | |
| 762 | * - userlist - wskaźnik do tablicy numerów, | |
| 763 | * - count - ilość numerków. | |
| 764 | * | |
| 765 | * jeśli udało się, zwraca 0. jeśli błąd, dostajemy -1. | |
| 766 | */ | |
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767 | int gg_notify(struct gg_session *sess, uin_t * userlist, int count) |
| 2393 | 768 | { |
| 769 | struct gg_notify *n; | |
| 770 | uin_t *u; | |
| 771 | int i, res = 0; | |
| 772 | ||
| 773 | if (!sess) { | |
| 774 | errno = EFAULT; | |
| 775 | return -1; | |
| 776 | } | |
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777 | |
| 2393 | 778 | if (sess->state != GG_STATE_CONNECTED) { |
| 779 | errno = ENOTCONN; | |
| 780 | return -1; | |
| 781 | } | |
| 782 | ||
| 783 | gg_debug(GG_DEBUG_FUNCTION, "** gg_notify(..., %d);\n", count); | |
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784 | |
| 2393 | 785 | if (!userlist || !count) |
| 786 | return 0; | |
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787 | |
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788 | if (!(n = (struct gg_notify *)malloc(sizeof(*n) * count))) |
| 2393 | 789 | return -1; |
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790 | |
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791 | for (u = userlist, i = 0; i < count; u++, i++) { |
| 2393 | 792 | n[i].uin = fix32(*u); |
| 793 | n[i].dunno1 = 3; | |
| 794 | } | |
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795 | |
| 2393 | 796 | if (gg_send_packet(sess->fd, GG_NOTIFY, n, sizeof(*n) * count, NULL, 0) == -1) |
| 797 | res = -1; | |
| 798 | ||
| 799 | free(n); | |
| 800 | ||
| 801 | return res; | |
| 802 | } | |
| 803 | ||
| 804 | /* | |
| 805 | * gg_add_notify() | |
| 806 | * | |
| 807 | * dodaje w locie do listy ukochanych dany numerek. | |
| 808 | * | |
| 809 | * - sess - identyfikator sesji, | |
| 810 | * - uin - numerek ukochanej. | |
| 811 | * | |
| 812 | * jeśli udało się wysłać, daje 0. inaczej -1. | |
| 813 | */ | |
| 814 | int gg_add_notify(struct gg_session *sess, uin_t uin) | |
| 815 | { | |
| 816 | struct gg_add_remove a; | |
| 817 | ||
| 818 | if (!sess) { | |
| 819 | errno = EFAULT; | |
| 820 | return -1; | |
| 821 | } | |
| 822 | ||
| 823 | if (sess->state != GG_STATE_CONNECTED) { | |
| 824 | errno = ENOTCONN; | |
| 825 | return -1; | |
| 826 | } | |
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827 | |
| 2393 | 828 | gg_debug(GG_DEBUG_FUNCTION, "** gg_add_notify(..., %u);\n", uin); |
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829 | |
| 2393 | 830 | a.uin = fix32(uin); |
| 831 | a.dunno1 = 3; | |
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832 | |
| 2393 | 833 | return gg_send_packet(sess->fd, GG_ADD_NOTIFY, &a, sizeof(a), NULL, 0); |
| 834 | } | |
| 835 | ||
| 836 | /* | |
| 837 | * gg_remove_notify() | |
| 838 | * | |
| 839 | * w locie usuwa z listy zainteresowanych. | |
| 840 | * | |
| 841 | * - sess - id sesji, | |
| 842 | * - uin - numerek. | |
| 843 | * | |
| 844 | * zwraca -1 jeśli był błąd, 0 jeśli się udało wysłać pakiet. | |
| 845 | */ | |
| 846 | int gg_remove_notify(struct gg_session *sess, uin_t uin) | |
| 847 | { | |
| 848 | struct gg_add_remove a; | |
| 849 | ||
| 850 | if (!sess) { | |
| 851 | errno = EFAULT; | |
| 852 | return -1; | |
| 853 | } | |
| 854 | ||
| 855 | if (sess->state != GG_STATE_CONNECTED) { | |
| 856 | errno = ENOTCONN; | |
| 857 | return -1; | |
| 858 | } | |
| 859 | ||
| 860 | gg_debug(GG_DEBUG_FUNCTION, "** gg_remove_notify(..., %u);\n", uin); | |
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861 | |
| 2393 | 862 | a.uin = fix32(uin); |
| 863 | a.dunno1 = 3; | |
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864 | |
| 2393 | 865 | return gg_send_packet(sess->fd, GG_REMOVE_NOTIFY, &a, sizeof(a), NULL, 0); |
| 866 | } | |
| 867 | ||
| 868 | /* | |
| 869 | * gg_watch_fd_connected() // funkcja wewnętrzna | |
| 870 | * | |
| 871 | * patrzy na socketa, odbiera pakiet i wypełnia strukturę zdarzenia. | |
| 872 | * | |
| 873 | * - sock - lalala, trudno zgadnąć. | |
| 874 | * | |
| 875 | * jeśli błąd -1, jeśli dobrze 0. | |
| 876 | */ | |
| 877 | static int gg_watch_fd_connected(struct gg_session *sess, struct gg_event *e) | |
| 878 | { | |
| 879 | struct gg_header *h; | |
| 880 | void *p; | |
| 881 | ||
| 882 | if (!sess) { | |
| 883 | errno = EFAULT; | |
| 884 | return -1; | |
| 885 | } | |
| 886 | ||
| 887 | gg_debug(GG_DEBUG_FUNCTION, "** gg_watch_fd_connected(...);\n"); | |
| 888 | ||
| 889 | if (!(h = gg_recv_packet(sess))) { | |
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890 | gg_debug(GG_DEBUG_MISC, "-- gg_recv_packet failed. errno = %d (%d)\n", errno, |
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891 | strerror(errno)); |
| 2393 | 892 | return -1; |
| 893 | } | |
| 894 | ||
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895 | p = (void *)h + sizeof(struct gg_header); |
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896 | |
| 2393 | 897 | if (h->type == GG_RECV_MSG) { |
| 898 | struct gg_recv_msg *r = p; | |
| 899 | ||
| 900 | gg_debug(GG_DEBUG_MISC, "-- received a message\n"); | |
| 901 | ||
| 902 | if (h->length >= sizeof(*r)) { | |
| 903 | e->type = GG_EVENT_MSG; | |
| 904 | e->event.msg.msgclass = fix32(r->msgclass); | |
| 905 | e->event.msg.sender = fix32(r->sender); | |
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906 | e->event.msg.message = strdup((char *)r + sizeof(*r)); |
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907 | e->event.msg.time = fix32(r->time); |
| 2393 | 908 | } |
| 909 | } | |
| 910 | ||
| 911 | if (h->type == GG_NOTIFY_REPLY) { | |
| 912 | struct gg_notify_reply *n = p; | |
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913 | int count, i; |
| 2393 | 914 | |
| 915 | gg_debug(GG_DEBUG_MISC, "-- received a notify reply\n"); | |
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916 | |
| 2393 | 917 | e->type = GG_EVENT_NOTIFY; |
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918 | if (!(e->event.notify = (void *)malloc(h->length + 2 * sizeof(*n)))) { |
| 2393 | 919 | gg_debug(GG_DEBUG_MISC, "-- not enough memory\n"); |
| 920 | free(h); | |
| 921 | return -1; | |
| 922 | } | |
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923 | count = h->length / sizeof(*n); |
| 2393 | 924 | memcpy(e->event.notify, p, h->length); |
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925 | e->event.notify[count].uin = 0; |
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926 | for (i = 0; i < count; i++) { |
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927 | e->event.notify[i].uin = fix32(e->event.notify[i].uin); |
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928 | e->event.notify[i].status = fix32(e->event.notify[i].status); |
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929 | } |
| 2393 | 930 | } |
| 931 | ||
| 932 | if (h->type == GG_STATUS) { | |
| 933 | struct gg_status *s = p; | |
| 934 | ||
| 935 | gg_debug(GG_DEBUG_MISC, "-- received a status change\n"); | |
| 936 | ||
| 937 | if (h->length >= sizeof(*s)) { | |
| 938 | e->type = GG_EVENT_STATUS; | |
| 939 | memcpy(&e->event.status, p, h->length); | |
|
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940 | e->event.status.uin = fix32(e->event.status.uin); |
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|
941 | e->event.status.status = fix32(e->event.status.status); |
| 2393 | 942 | } |
| 943 | } | |
| 944 | ||
| 945 | if (h->type == GG_SEND_MSG_ACK) { | |
| 946 | struct gg_send_msg_ack *s = p; | |
| 947 | ||
| 948 | gg_debug(GG_DEBUG_MISC, "-- received a message ack\n"); | |
| 949 | ||
| 950 | if (h->length >= sizeof(*s)) { | |
| 951 | e->type = GG_EVENT_ACK; | |
| 952 | e->event.ack.status = fix32(s->status); | |
| 953 | e->event.ack.recipient = fix32(s->recipient); | |
| 954 | e->event.ack.seq = fix32(s->seq); | |
| 955 | } | |
| 956 | } | |
| 957 | ||
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958 | if (h->type == GG_PONG) { |
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959 | gg_debug(GG_DEBUG_MISC, "-- received a pong\n"); |
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960 | |
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961 | sess->last_pong = time(NULL); |
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962 | } |
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|
963 | |
| 2393 | 964 | free(h); |
| 965 | ||
| 966 | return 0; | |
| 967 | } | |
| 968 | ||
| 969 | /* | |
| 970 | * gg_chomp() // funkcja wewnętrzna | |
| 971 | * | |
| 972 | * ucina "\r\n" lub "\n" z końca linii. | |
| 973 | * | |
| 974 | * - line - ofiara operacji plastycznej. | |
| 975 | * | |
| 976 | * niczego nie zwraca. | |
| 977 | */ | |
| 978 | static void gg_chomp(char *line) | |
| 979 | { | |
| 980 | if (!line || strlen(line) < 1) | |
| 981 | return; | |
| 982 | ||
| 983 | if (line[strlen(line) - 1] == '\n') | |
| 984 | line[strlen(line) - 1] = 0; | |
| 985 | if (line[strlen(line) - 1] == '\r') | |
| 986 | line[strlen(line) - 1] = 0; | |
| 987 | } | |
| 988 | ||
| 989 | /* | |
| 990 | * gg_watch_fd() | |
| 991 | * | |
| 992 | * funkcja wywoływana, gdy coś się stanie na obserwowanym deskryptorze. | |
| 993 | * zwraca klientowi informację o tym, co się dzieje. | |
| 994 | * | |
| 995 | * - sess - identyfikator sesji. | |
| 996 | * | |
| 997 | * zwraca wskaźnik do struktury gg_event, którą trzeba zwolnić później | |
| 998 | * za pomocą gg_free_event(). jesli rodzaj zdarzenia jest równy | |
| 999 | * GG_EVENT_NONE, należy je olać kompletnie. jeśli zwróciło NULL, | |
| 1000 | * stało się coś niedobrego -- albo brakło pamięci albo zerwało | |
| 1001 | * połączenie albo coś takiego. | |
| 1002 | */ | |
| 1003 | struct gg_event *gg_watch_fd(struct gg_session *sess) | |
| 1004 | { | |
| 1005 | struct gg_event *e; | |
| 1006 | int res = 0; | |
| 1007 | ||
| 1008 | if (!sess) { | |
| 1009 | errno = EFAULT; | |
| 1010 | return NULL; | |
| 1011 | } | |
| 1012 | ||
| 1013 | gg_debug(GG_DEBUG_FUNCTION, "** gg_watch_fd(...);\n"); | |
| 1014 | ||
|
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1015 | if (!(e = (void *)malloc(sizeof(*e)))) { |
| 2393 | 1016 | gg_debug(GG_DEBUG_MISC, "-- not enough memory\n"); |
| 1017 | return NULL; | |
| 1018 | } | |
| 1019 | ||
| 1020 | e->type = GG_EVENT_NONE; | |
| 1021 | ||
| 1022 | switch (sess->state) { | |
|
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|
1023 | case GG_STATE_RESOLVING: |
| 2393 | 1024 | { |
| 1025 | struct in_addr a; | |
| 1026 | ||
| 1027 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_RESOLVING\n"); | |
| 1028 | ||
| 1029 | if (read(sess->fd, &a, sizeof(a)) < sizeof(a) || a.s_addr == INADDR_NONE) { | |
|
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|
1030 | gg_debug(GG_DEBUG_MISC, "-- resolving failed\n"); |
| 2393 | 1031 | |
|
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|
1032 | errno = ENOENT; |
| 2393 | 1033 | e->type = GG_EVENT_CONN_FAILED; |
| 1034 | e->event.failure = GG_FAILURE_RESOLVING; | |
| 1035 | sess->state = GG_STATE_IDLE; | |
| 1036 | ||
| 1037 | close(sess->fd); | |
| 1038 | ||
| 1039 | break; | |
| 1040 | } | |
| 1041 | ||
|
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1042 | sess->server_ip = a.s_addr; |
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|
1043 | |
| 2393 | 1044 | close(sess->fd); |
| 1045 | ||
| 1046 | waitpid(sess->pid, NULL, 0); | |
| 1047 | ||
| 1048 | gg_debug(GG_DEBUG_MISC, "-- resolved, now connecting\n"); | |
| 1049 | ||
| 1050 | if ((sess->fd = gg_connect(&a, GG_APPMSG_PORT, sess->async)) == -1) { | |
|
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|
1051 | struct in_addr *addr = (struct in_addr *)&sess->server_ip; |
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1052 | |
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1053 | gg_debug(GG_DEBUG_MISC, |
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1054 | "-- connection failed, trying direct connection\n"); |
| 2393 | 1055 | |
|
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1056 | if ((sess->fd = gg_connect(addr, GG_DEFAULT_PORT, sess->async)) == -1) { |
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1057 | gg_debug(GG_DEBUG_MISC, |
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1058 | "-- connection failed, trying https connection\n"); |
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1059 | if ((sess->fd = |
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1060 | gg_connect(&a, GG_HTTPS_PORT, sess->async)) == -1) { |
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1061 | gg_debug(GG_DEBUG_MISC, |
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1062 | "-- connect() failed. errno = %d (%s)\n", errno, |
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1063 | strerror(errno)); |
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1064 | |
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1065 | e->type = GG_EVENT_CONN_FAILED; |
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1066 | e->event.failure = GG_FAILURE_CONNECTING; |
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1067 | sess->state = GG_STATE_IDLE; |
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1068 | break; |
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1069 | } |
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1070 | } |
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1071 | sess->state = GG_STATE_CONNECTING_GG; |
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1072 | sess->check = GG_CHECK_WRITE; |
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1073 | } else { |
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1074 | sess->state = GG_STATE_CONNECTING_HTTP; |
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|
1075 | sess->check = GG_CHECK_WRITE; |
| 2393 | 1076 | } |
| 1077 | ||
| 1078 | break; | |
| 1079 | } | |
| 1080 | ||
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|
1081 | case GG_STATE_CONNECTING_HTTP: |
| 2393 | 1082 | { |
| 1083 | char buf[1024]; | |
| 1084 | int res, res_size = sizeof(res); | |
| 1085 | ||
| 1086 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_CONNECTING_HTTP\n"); | |
| 1087 | ||
|
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1088 | if (sess->async |
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1089 | && (getsockopt(sess->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) { |
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1090 | struct in_addr *addr = (struct in_addr *)&sess->server_ip; |
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1091 | gg_debug(GG_DEBUG_MISC, |
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1092 | "-- http connection failed, errno = %d (%s), trying direct connection\n", |
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1093 | res, strerror(res)); |
| 2393 | 1094 | |
|
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1095 | if ((sess->fd = gg_connect(addr, GG_DEFAULT_PORT, sess->async)) == -1) { |
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1096 | gg_debug(GG_DEBUG_MISC, |
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1097 | "-- connection failed, trying https connection\n"); |
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1098 | if ((sess->fd = |
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1099 | gg_connect(addr, GG_HTTPS_PORT, sess->async)) == -1) { |
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1100 | gg_debug(GG_DEBUG_MISC, |
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1101 | "-- connect() failed. errno = %d (%s)\n", errno, |
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1102 | strerror(errno)); |
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1103 | |
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1104 | e->type = GG_EVENT_CONN_FAILED; |
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1105 | e->event.failure = GG_FAILURE_CONNECTING; |
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1106 | sess->state = GG_STATE_IDLE; |
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1107 | break; |
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1108 | } |
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1109 | } |
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1110 | |
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1111 | sess->state = GG_STATE_CONNECTING_GG; |
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1112 | sess->check = GG_CHECK_WRITE; |
| 2393 | 1113 | break; |
| 1114 | } | |
| 1115 | ||
| 1116 | gg_debug(GG_DEBUG_MISC, "-- http connection succeded, sending query\n"); | |
| 1117 | ||
| 1118 | snprintf(buf, sizeof(buf) - 1, | |
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1119 | "GET /appsvc/appmsg.asp?fmnumber=%lu HTTP/1.0\r\n" |
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1120 | "Host: " GG_APPMSG_HOST "\r\n" |
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1121 | "User-Agent: " GG_HTTP_USERAGENT "\r\n" |
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1122 | "Pragma: no-cache\r\n" "\r\n", sess->uin); |
| 2393 | 1123 | |
| 1124 | if (write(sess->fd, buf, strlen(buf)) < strlen(buf)) { | |
| 1125 | gg_debug(GG_DEBUG_MISC, "-- sending query failed\n"); | |
| 1126 | ||
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1127 | errno = EIO; |
| 2393 | 1128 | e->type = GG_EVENT_CONN_FAILED; |
| 1129 | e->event.failure = GG_FAILURE_WRITING; | |
| 1130 | sess->state = GG_STATE_IDLE; | |
| 1131 | break; | |
| 1132 | } | |
| 1133 | ||
| 1134 | sess->state = GG_STATE_WRITING_HTTP; | |
| 1135 | sess->check = GG_CHECK_READ; | |
| 1136 | ||
| 1137 | break; | |
| 1138 | } | |
| 1139 | ||
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1140 | case GG_STATE_WRITING_HTTP: |
| 2393 | 1141 | { |
| 1142 | char buf[1024], *tmp, *host; | |
| 1143 | int port = GG_DEFAULT_PORT; | |
| 1144 | struct in_addr a; | |
| 1145 | ||
| 1146 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_WRITING_HTTP\n"); | |
| 1147 | ||
| 1148 | gg_read_line(sess->fd, buf, sizeof(buf) - 1); | |
| 1149 | gg_chomp(buf); | |
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1150 | |
| 2393 | 1151 | gg_debug(GG_DEBUG_TRAFFIC, "-- got http response (%s)\n", buf); |
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1152 | |
| 2393 | 1153 | if (strncmp(buf, "HTTP/1.", 7) || strncmp(buf + 9, "200", 3)) { |
| 1154 | gg_debug(GG_DEBUG_MISC, "-- but that's not what we've expected\n"); | |
| 1155 | ||
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1156 | errno = EINVAL; |
| 2393 | 1157 | e->type = GG_EVENT_CONN_FAILED; |
| 1158 | e->event.failure = GG_FAILURE_INVALID; | |
| 1159 | sess->state = GG_STATE_IDLE; | |
| 1160 | break; | |
| 1161 | } | |
|
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|
1162 | |
| 2393 | 1163 | while (strcmp(buf, "\r\n") && strcmp(buf, "")) |
| 1164 | gg_read_line(sess->fd, buf, sizeof(buf) - 1); | |
| 1165 | ||
| 1166 | gg_read_line(sess->fd, buf, sizeof(buf) - 1); | |
| 1167 | gg_chomp(buf); | |
|
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1168 | |
| 2393 | 1169 | close(sess->fd); |
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1170 | |
| 2393 | 1171 | gg_debug(GG_DEBUG_TRAFFIC, "-- received http data (%s)\n", buf); |
| 1172 | ||
| 1173 | tmp = buf; | |
| 1174 | while (*tmp && *tmp != ' ') | |
| 1175 | tmp++; | |
| 1176 | while (*tmp && *tmp == ' ') | |
| 1177 | tmp++; | |
| 1178 | while (*tmp && *tmp != ' ') | |
| 1179 | tmp++; | |
| 1180 | while (*tmp && *tmp == ' ') | |
| 1181 | tmp++; | |
| 1182 | while (*tmp && *tmp != ' ') | |
| 1183 | tmp++; | |
| 1184 | while (*tmp && *tmp == ' ') | |
| 1185 | tmp++; | |
| 1186 | host = tmp; | |
| 1187 | while (*tmp && *tmp != ' ') | |
| 1188 | tmp++; | |
| 1189 | *tmp = 0; | |
| 1190 | ||
| 1191 | if ((tmp = strchr(host, ':'))) { | |
| 1192 | *tmp = 0; | |
|
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1193 | port = atoi(tmp + 1); |
| 2393 | 1194 | } |
| 1195 | ||
| 1196 | a.s_addr = inet_addr(host); | |
|
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|
1197 | sess->server_ip = a.s_addr; |
| 2393 | 1198 | |
| 1199 | if ((sess->fd = gg_connect(&a, port, sess->async)) == -1) { | |
|
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1200 | gg_debug(GG_DEBUG_MISC, |
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1201 | "-- connection failed, trying https connection\n"); |
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1202 | if ((sess->fd = gg_connect(&a, GG_HTTPS_PORT, sess->async)) == -1) { |
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1203 | gg_debug(GG_DEBUG_MISC, |
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1204 | "-- connection failed, errno = %d (%s)\n", errno, |
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1205 | strerror(errno)); |
| 2393 | 1206 | |
|
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1207 | e->type = GG_EVENT_CONN_FAILED; |
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1208 | e->event.failure = GG_FAILURE_CONNECTING; |
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1209 | sess->state = GG_STATE_IDLE; |
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1210 | break; |
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|
1211 | } |
| 2393 | 1212 | } |
| 1213 | ||
| 1214 | sess->state = GG_STATE_CONNECTING_GG; | |
| 1215 | sess->check = GG_CHECK_WRITE; | |
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1216 | |
| 2393 | 1217 | break; |
| 1218 | } | |
| 1219 | ||
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1220 | case GG_STATE_CONNECTING_GG: |
| 2393 | 1221 | { |
| 1222 | int res, res_size = sizeof(res); | |
| 1223 | ||
| 1224 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_CONNECTING_GG\n"); | |
| 1225 | ||
|
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1226 | if (sess->async |
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|
1227 | && (getsockopt(sess->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) { |
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|
1228 | struct in_addr *addr = (struct in_addr *)&sess->server_ip; |
| 2393 | 1229 | |
|
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1230 | gg_debug(GG_DEBUG_MISC, |
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|
1231 | "-- connection failed, trying https connection\n"); |
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1232 | if ((sess->fd = gg_connect(addr, GG_HTTPS_PORT, sess->async)) == -1) { |
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1233 | gg_debug(GG_DEBUG_MISC, |
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1234 | "-- connection failed, errno = %d (%s)\n", errno, |
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1235 | strerror(errno)); |
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1236 | |
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1237 | e->type = GG_EVENT_CONN_FAILED; |
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1238 | e->event.failure = GG_FAILURE_CONNECTING; |
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1239 | sess->state = GG_STATE_IDLE; |
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1240 | break; |
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|
1241 | } |
| 2393 | 1242 | } |
| 1243 | ||
| 1244 | gg_debug(GG_DEBUG_MISC, "-- connected\n"); | |
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1245 | |
| 2393 | 1246 | sess->state = GG_STATE_WAITING_FOR_KEY; |
| 1247 | sess->check = GG_CHECK_READ; | |
| 1248 | ||
| 1249 | break; | |
| 1250 | } | |
| 1251 | ||
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1252 | case GG_STATE_WAITING_FOR_KEY: |
| 2393 | 1253 | { |
|
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1254 | struct gg_header *h; |
| 2393 | 1255 | struct gg_welcome *w; |
| 1256 | struct gg_login l; | |
| 1257 | unsigned int hash; | |
| 1258 | char *password = sess->password; | |
| 1259 | ||
| 1260 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_WAITING_FOR_KEY\n"); | |
| 1261 | ||
| 1262 | if (!(h = gg_recv_packet(sess))) { | |
|
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|
1263 | gg_debug(GG_DEBUG_MISC, "-- gg_recv_packet() failed. errno = %d (%s)\n", |
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|
1264 | errno, strerror(errno)); |
| 2393 | 1265 | |
| 1266 | e->type = GG_EVENT_CONN_FAILED; | |
| 1267 | e->event.failure = GG_FAILURE_READING; | |
| 1268 | sess->state = GG_STATE_IDLE; | |
| 1269 | close(sess->fd); | |
| 1270 | break; | |
| 1271 | } | |
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|
1272 | |
| 2393 | 1273 | if (h->type != GG_WELCOME) { |
| 1274 | gg_debug(GG_DEBUG_MISC, "-- invalid packet received\n"); | |
| 1275 | ||
| 1276 | free(h); | |
| 1277 | close(sess->fd); | |
|
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|
1278 | errno = EINVAL; |
| 2393 | 1279 | e->type = GG_EVENT_CONN_FAILED; |
| 1280 | e->event.failure = GG_FAILURE_INVALID; | |
| 1281 | sess->state = GG_STATE_IDLE; | |
| 1282 | break; | |
| 1283 | } | |
|
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|
1284 | |
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|
1285 | w = (void *)h + sizeof(struct gg_header); |
| 2393 | 1286 | w->key = fix32(w->key); |
| 1287 | ||
| 1288 | for (hash = 1; *password; password++) | |
| 1289 | hash *= (*password) + 1; | |
| 1290 | hash *= w->key; | |
|
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1291 | |
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1292 | gg_debug(GG_DEBUG_DUMP, "%%%% klucz serwera %.4x, hash hasła %.8x\n", w->key, |
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|
1293 | hash); |
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|
1294 | |
| 2393 | 1295 | free(h); |
| 1296 | ||
| 1297 | free(sess->password); | |
| 1298 | sess->password = NULL; | |
|
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1299 | |
| 2393 | 1300 | l.uin = fix32(sess->uin); |
| 1301 | l.hash = fix32(hash); | |
|
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1302 | l.status = fix32(sess->initial_status ? sess->initial_status : GG_STATUS_AVAIL); |
| 2393 | 1303 | l.dunno = fix32(0x0b); |
| 1304 | l.local_ip = 0; | |
| 1305 | l.local_port = 0; | |
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1306 | |
| 2393 | 1307 | gg_debug(GG_DEBUG_TRAFFIC, "-- sending GG_LOGIN packet\n"); |
| 1308 | ||
| 1309 | if (gg_send_packet(sess->fd, GG_LOGIN, &l, sizeof(l), NULL, 0) == -1) { | |
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1310 | gg_debug(GG_DEBUG_TRAFFIC, "-- oops, failed. errno = %d (%s)\n", errno, |
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1311 | strerror(errno)); |
| 2393 | 1312 | |
| 1313 | close(sess->fd); | |
| 1314 | e->type = GG_EVENT_CONN_FAILED; | |
| 1315 | e->event.failure = GG_FAILURE_WRITING; | |
| 1316 | sess->state = GG_STATE_IDLE; | |
| 1317 | break; | |
| 1318 | } | |
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1319 | |
| 2393 | 1320 | sess->state = GG_STATE_SENDING_KEY; |
| 1321 | ||
| 1322 | break; | |
| 1323 | } | |
| 1324 | ||
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1325 | case GG_STATE_SENDING_KEY: |
| 2393 | 1326 | { |
| 1327 | struct gg_header *h; | |
| 1328 | ||
| 1329 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_SENDING_KEY\n"); | |
| 1330 | ||
| 1331 | if (!(h = gg_recv_packet(sess))) { | |
| 1332 | gg_debug(GG_DEBUG_MISC, "-- recv_packet failed\n"); | |
| 1333 | e->type = GG_EVENT_CONN_FAILED; | |
| 1334 | e->event.failure = GG_FAILURE_READING; | |
| 1335 | sess->state = GG_STATE_IDLE; | |
| 1336 | close(sess->fd); | |
| 1337 | break; | |
| 1338 | } | |
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1339 | |
| 2393 | 1340 | if (h->type == GG_LOGIN_OK) { |
| 1341 | gg_debug(GG_DEBUG_MISC, "-- login succeded\n"); | |
| 1342 | e->type = GG_EVENT_CONN_SUCCESS; | |
| 1343 | sess->state = GG_STATE_CONNECTED; | |
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1344 | free(h); |
| 2393 | 1345 | break; |
| 1346 | } | |
| 1347 | ||
| 1348 | if (h->type == GG_LOGIN_FAILED) { | |
| 1349 | gg_debug(GG_DEBUG_MISC, "-- login failed\n"); | |
| 1350 | e->event.failure = GG_FAILURE_PASSWORD; | |
| 1351 | errno = EACCES; | |
| 1352 | } else { | |
| 1353 | gg_debug(GG_DEBUG_MISC, "-- invalid packet\n"); | |
| 1354 | e->event.failure = GG_FAILURE_INVALID; | |
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1355 | errno = EINVAL; |
| 2393 | 1356 | } |
| 1357 | ||
| 1358 | e->type = GG_EVENT_CONN_FAILED; | |
| 1359 | sess->state = GG_STATE_IDLE; | |
| 1360 | close(sess->fd); | |
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1361 | free(h); |
| 2393 | 1362 | |
| 1363 | break; | |
| 1364 | } | |
| 1365 | ||
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1366 | case GG_STATE_CONNECTED: |
| 2393 | 1367 | { |
| 1368 | gg_debug(GG_DEBUG_MISC, "== GG_STATE_CONNECTED\n"); | |
| 1369 | ||
| 1370 | if ((res = gg_watch_fd_connected(sess, e)) == -1) { | |
| 1371 | ||
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1372 | gg_debug(GG_DEBUG_MISC, |
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1373 | "-- watch_fd_connected failed. errno = %d (%s)\n", errno, |
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1374 | strerror(errno)); |
| 2393 | 1375 | |
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1376 | if (errno == EAGAIN) { |
| 2393 | 1377 | e->type = GG_EVENT_NONE; |
| 1378 | res = 0; | |
| 1379 | } else | |
| 1380 | res = -1; | |
| 1381 | } | |
| 1382 | break; | |
| 1383 | } | |
| 1384 | } | |
| 1385 | ||
| 1386 | if (res == -1) { | |
| 1387 | free(e); | |
| 1388 | e = NULL; | |
| 1389 | } | |
| 1390 | ||
| 1391 | return e; | |
| 1392 | } |