src/util.c

/*
 * gaim
 *
 * Copyright (C) 1998-1999, Mark Spencer <markster@marko.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <sys/wait.h>
#include <ctype.h>
#ifdef HAVE_ICONV
#include <iconv.h>
#endif
#include <math.h>
#include "gaim.h"
#include "prpl.h"
#include "gtkspell.h"

char *full_date()
{
	char *date;
	time_t tme;

	time(&tme);
	date = ctime(&tme);
	date[strlen(date) - 1] = '\0';
	return date;
}

gint badchar(char c)
{
	switch (c) {
	case ' ':
	case ',':
	case '(':
	case ')':
	case '\0':
	case '\n':
	case '<':
	case '>':
	case '"':
		return 1;
	default:
		return 0;
	}
}


gchar *sec_to_text(guint sec)
{
	int daze, hrs, min;
	char *ret = g_malloc(256);

	daze = sec / (60 * 60 * 24);
	hrs = (sec % (60 * 60 * 24)) / (60 * 60);
	min = (sec % (60 * 60)) / 60;
	sec = min % 60;

	if (daze) {
		if (hrs || min) {
			if (hrs) {
				if (min) {
					g_snprintf(ret, 256,
						   "%d day%s, %d hour%s, %d minute%s.",
						   daze, daze == 1 ? "" : "s",
						   hrs, hrs == 1 ? "" : "s", min, min == 1 ? "" : "s");
				} else {
					g_snprintf(ret, 256,
						   "%d day%s, %d hour%s.",
						   daze, daze == 1 ? "" : "s", hrs, hrs == 1 ? "" : "s");
				}
			} else {
				g_snprintf(ret, 256,
					   "%d day%s, %d minute%s.",
					   daze, daze == 1 ? "" : "s", min, min == 1 ? "" : "s");
			}
		} else
			g_snprintf(ret, 256, "%d day%s.", daze, daze == 1 ? "" : "s");
	} else {
		if (hrs) {
			if (min) {
				g_snprintf(ret, 256,
					   "%d hour%s, %d minute%s.",
					   hrs, hrs == 1 ? "" : "s", min, min == 1 ? "" : "s");
			} else {
				g_snprintf(ret, 256, "%d hour%s.", hrs, hrs == 1 ? "" : "s");
			}
		} else {
			g_snprintf(ret, 256, "%d minute%s.", min, min == 1 ? "" : "s");
		}
	}

	return ret;
}

gint linkify_text(char *text)
{
	char *c, *t;
	char *cpy = g_malloc(strlen(text) * 3 + 1);
	char url_buf[BUF_LEN * 4];
	int cnt = 0;
	/* Assumes you have a buffer able to cary at least BUF_LEN * 2 bytes */

	strncpy(cpy, text, strlen(text));
	cpy[strlen(text)] = 0;
	c = cpy;
	while (*c) {
		if (!g_strncasecmp(c, "<A", 2)) {
			while (1) {
				if (!g_strncasecmp(c, "/A>", 3)) {
					break;
				}
				text[cnt++] = *c;
				c++;
				if (!(*c))
					break;
			}
		} else if ((!g_strncasecmp(c, "http://", 7) || (!g_strncasecmp(c, "https://", 8)))) {
			t = c;
			while (1) {
				if (badchar(*t)) {

					if (*(t) == ',' && (*(t + 1) != ' ')) {
						t++;
						continue;
					}

					if (*(t - 1) == '.')
						t--;
					strncpy(url_buf, c, t - c);
					url_buf[t - c] = 0;
					cnt += g_snprintf(&text[cnt], 1024, "<A HREF=\"%s\">%s</A>",
							  url_buf, url_buf);
					c = t;
					break;
				}
				if (!t)
					break;
				t++;

			}
		} else if (!g_strncasecmp(c, "www.", 4)) {
			if (g_strncasecmp(c, "www..", 5)) {
				t = c;
				while (1) {
					if (badchar(*t)) {
						if (t - c == 4) {
							break;
						}

						if (*(t) == ',' && (*(t + 1) != ' ')) {
							t++;
							continue;
						}

						if (*(t - 1) == '.')
							t--;
						strncpy(url_buf, c, t - c);
						url_buf[t - c] = 0;
						cnt += g_snprintf(&text[cnt], 1024,
								 "<A HREF=\"http://%s\">%s</A>", url_buf,
								 url_buf);
						c = t;
						break;
					}
					if (!t)
						break;
					t++;
				}
			}
		} else if (!g_strncasecmp(c, "ftp://", 6)) {
			t = c;
			while (1) {
				if (badchar(*t)) {
					if (*(t - 1) == '.')
						t--;
					strncpy(url_buf, c, t - c);
					url_buf[t - c] = 0;
					cnt += g_snprintf(&text[cnt], 1024, "<A HREF=\"%s\">%s</A>",
							  url_buf, url_buf);
					c = t;
					break;
				}
				if (!t)
					break;
				t++;

			}
		} else if (!g_strncasecmp(c, "ftp.", 4)) {
			if (g_strncasecmp(c, "ftp..", 5)) {
				t = c;
				while (1) {
					if (badchar(*t)) {
						if (t - c == 4) {
							break;
						}
						if (*(t - 1) == '.')
							t--;
						strncpy(url_buf, c, t - c);
						url_buf[t - c] = 0;
						cnt += g_snprintf(&text[cnt], 1024,
								  "<A HREF=\"ftp://%s\">%s</A>", url_buf,
								  url_buf);
						c = t;
						break;
					}
					if (!t)
						break;
					t++;
				}
			}
		} else if (!g_strncasecmp(c, "mailto:", 7)) {
			t = c;
			while (1) {
				if (badchar(*t)) {
					if (*(t - 1) == '.')
						t--;
					strncpy(url_buf, c, t - c);
					url_buf[t - c] = 0;
					cnt += g_snprintf(&text[cnt], 1024, "<A HREF=\"%s\">%s</A>",
							  url_buf, url_buf);
					c = t;
					break;
				}
				if (!t)
					break;
				t++;

			}
		} else if (c != cpy && !g_strncasecmp(c, "@", 1)) {
			char *tmp;
			int flag;
			int len = 0;
			char illegal_chars[] = "!@#$%^&*()[]{}/|\\<>\":;\0";
			url_buf[0] = 0;

			if (*(c - 1) == ' ' || *(c + 1) == ' ' || rindex(illegal_chars, *(c + 1))
			    || *(c + 1) == 13 || *(c + 1) == 10)
				flag = 0;
			else
				flag = 1;

			t = c;
			while (flag) {
				if (badchar(*t)) {
					cnt -= (len - 1);
					break;
				} else {
					len++;
					tmp = g_malloc(len + 1);
					tmp[len] = 0;
					tmp[0] = *t;
					strncpy(tmp + 1, url_buf, len - 1);
					strcpy(url_buf, tmp);
					url_buf[len] = 0;
					g_free(tmp);
					t--;
					if (t < cpy) {
						cnt = 0;
						break;
					}
				}
			}

			t = c + 1;

			while (flag) {
				if (badchar(*t)) {
					char *d;

					for (d = url_buf + strlen(url_buf) - 1; *d == '.'; d--, t--)
						*d = '\0';

					cnt += g_snprintf(&text[cnt], 1024,
							  "<A HREF=\"mailto:%s\">%s</A>", url_buf,
							  url_buf);
					text[cnt] = 0;


					c = t;

					break;
				} else {
					strncat(url_buf, t, 1);
					len++;
					url_buf[len] = 0;
				}

				t++;
			}
		}

		if (*c == 0)
			break;

		text[cnt++] = *c;
		c++;

	}
	text[cnt] = 0;
	g_free(cpy);
	return cnt;
}


FILE *open_gaim_log_file(char *name, int *flag)
{
	char *buf;
	char *buf2;
	char log_all_file[256];
	struct stat st;
	FILE *fd;
	int res;
	gchar *gaim_dir;

	buf = g_malloc(BUF_LONG);
	buf2 = g_malloc(BUF_LONG);
	gaim_dir = gaim_user_dir();

	/*  Dont log yourself */
	strncpy(log_all_file, gaim_dir, 256);

	stat(log_all_file, &st);
	if (!S_ISDIR(st.st_mode))
		unlink(log_all_file);

	fd = fopen(log_all_file, "r");

	if (!fd) {
		res = mkdir(log_all_file, S_IRUSR | S_IWUSR | S_IXUSR);
		if (res < 0) {
			g_snprintf(buf, BUF_LONG, "Unable to make directory %s for logging",
				   log_all_file);
			do_error_dialog(buf, NULL, GAIM_ERROR);
			g_free(buf);
			g_free(buf2);
			g_free(gaim_dir);
			return NULL;
		}
	} else
		fclose(fd);

	g_snprintf(log_all_file, 256, "%s/logs", gaim_dir);

	if (stat(log_all_file, &st) < 0)
		*flag = 1;
	if (!S_ISDIR(st.st_mode))
		unlink(log_all_file);

	fd = fopen(log_all_file, "r");
	if (!fd) {
		res = mkdir(log_all_file, S_IRUSR | S_IWUSR | S_IXUSR);
		if (res < 0) {
			g_snprintf(buf, BUF_LONG, "Unable to make directory %s for logging",
				   log_all_file);
			do_error_dialog(buf, NULL, GAIM_ERROR);
			g_free(buf);
			g_free(buf2);
			g_free(gaim_dir);
			return NULL;
		}
	} else
		fclose(fd);


	g_snprintf(log_all_file, 256, "%s/logs/%s", gaim_dir, name);
	if (stat(log_all_file, &st) < 0)
		*flag = 1;

	debug_printf("Logging to: \"%s\"\n", log_all_file);

	fd = fopen(log_all_file, "a");

	g_free(buf);
	g_free(buf2);
	g_free(gaim_dir);
	return fd;
}

FILE *open_log_file(char *name, int is_chat)
{
	struct stat st;
	char realname[256];
	struct log_conversation *l;
	FILE *fd;
	int flag = 0;

	if (((is_chat == 2) && !(logging_options & OPT_LOG_INDIVIDUAL))
		|| ((is_chat == 1) && !(logging_options & OPT_LOG_CHATS))
		|| ((is_chat == 0) && !(logging_options & OPT_LOG_CONVOS))) {

		l = find_log_info(name);
		if (!l)
			return NULL;

		if (stat(l->filename, &st) < 0)
			flag = 1;

		fd = fopen(l->filename, "a");

		if (flag) {	/* is a new file */
			if (logging_options & OPT_LOG_STRIP_HTML) {
				fprintf(fd, "IM Sessions with %s\n", name);
			} else {
				fprintf(fd, "<HTML><HEAD><TITLE>");
				fprintf(fd, "IM Sessions with %s", name);
				fprintf(fd, "</TITLE></HEAD><BODY BGCOLOR=\"ffffff\">\n");
			}
		}

		return fd;
	}

	g_snprintf(realname, sizeof(realname), "%s.log", normalize(name));
	fd = open_gaim_log_file(realname, &flag);

	if (fd && flag) {	/* is a new file */
		if (logging_options & OPT_LOG_STRIP_HTML) {
			fprintf(fd, "IM Sessions with %s\n", name);
		} else {
			fprintf(fd, "<HTML><HEAD><TITLE>");
			fprintf(fd, "IM Sessions with %s", name);
			fprintf(fd, "</TITLE></HEAD><BODY BGCOLOR=\"ffffff\">\n");
		}
	}

	return fd;
}

FILE *open_system_log_file(char *name)
{
	int x;

	if (name)
		return open_log_file(name, 2);
	else
		return open_gaim_log_file("system", &x);
}

char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" "0123456789+/";

/* XXX Find bug */
char *tobase64(const char *text)
{
	char *out = NULL;
	const char *c;
	unsigned int tmp = 0;
	int len = 0, n = 0;

	c = text;

	while (*c) {
		tmp = tmp << 8;
		tmp += *c;
		n++;

		if (n == 3) {
			out = g_realloc(out, len + 4);
			out[len] = alphabet[(tmp >> 18) & 0x3f];
			out[len + 1] = alphabet[(tmp >> 12) & 0x3f];
			out[len + 2] = alphabet[(tmp >> 6) & 0x3f];
			out[len + 3] = alphabet[tmp & 0x3f];
			len += 4;
			tmp = 0;
			n = 0;
		}
		c++;
	}
	switch (n) {

	case 2:
		tmp <<= 8;
		out = g_realloc(out, len + 5);
		out[len] = alphabet[(tmp >> 18) & 0x3f];
		out[len + 1] = alphabet[(tmp >> 12) & 0x3f];
		out[len + 2] = alphabet[(tmp >> 6) & 0x3f];
		out[len + 3] = '=';
		out[len + 4] = 0;
		break;
	case 1:
		tmp <<= 16;
		out = g_realloc(out, len + 5);
		out[len] = alphabet[(tmp >> 18) & 0x3f];
		out[len + 1] = alphabet[(tmp >> 12) & 0x3f];
		out[len + 2] = '=';
		out[len + 3] = '=';
		out[len + 4] = 0;
		break;
	case 0:
		out = g_realloc(out, len + 1);
		out[len] = 0;
		break;
	}
	return out;
}


void frombase64(const char *text, char **data, int *size)
{
	char *out = NULL;
	char tmp = 0;
	const char *c;
	gint32 tmp2 = 0;
	int len = 0, n = 0;

	if (!text || !data)
		return;

	c = text;

	while (*c) {
		if (*c >= 'A' && *c <= 'Z') {
			tmp = *c - 'A';
		} else if (*c >= 'a' && *c <= 'z') {
			tmp = 26 + (*c - 'a');
		} else if (*c >= '0' && *c <= 57) {
			tmp = 52 + (*c - '0');
		} else if (*c == '+') {
			tmp = 62;
		} else if (*c == '/') {
			tmp = 63;
		} else if (*c == '=') {
			if (n == 3) {
				out = g_realloc(out, len + 2);
				out[len] = (char)(tmp2 >> 10) & 0xff;
				len++;
				out[len] = (char)(tmp2 >> 2) & 0xff;
				len++;
			} else if (n == 2) {
				out = g_realloc(out, len + 1);
				out[len] = (char)(tmp2 >> 4) & 0xff;
				len++;
			}
			break;
		}
		tmp2 = ((tmp2 << 6) | (tmp & 0xff));
		n++;
		if (n == 4) {
			out = g_realloc(out, len + 3);
			out[len] = (char)((tmp2 >> 16) & 0xff);
			len++;
			out[len] = (char)((tmp2 >> 8) & 0xff);
			len++;
			out[len] = (char)(tmp2 & 0xff);
			len++;
			tmp2 = 0;
			n = 0;
		}
		c++;
	}

	out = g_realloc(out, len + 1);
	out[len] = 0;

	*data = out;
	if (size)
		*size = len;
}


char *normalize(const char *s)
{
	static char buf[BUF_LEN];
	char *t, *u;
	int x = 0;

	g_return_val_if_fail((s != NULL), NULL);

	u = t = g_strdup(s);

	strcpy(t, s);
	g_strdown(t);

	while (*t && (x < BUF_LEN - 1)) {
		if (*t != ' ') {
			buf[x] = *t;
			x++;
		}
		t++;
	}
	buf[x] = '\0';
	g_free(u);
	return buf;
}

char *date()
{
	static char date[80];
	time_t tme;
	time(&tme);
	strftime(date, sizeof(date), "%H:%M:%S", localtime(&tme));
	return date;
}


void clean_pid(void)
{
	int status;
	pid_t pid, spell_pid;

	while((pid = waitpid(-1, &status, WNOHANG)) > 0) {
		if((spell_pid = gtkspell_running()) != 0 && pid == spell_pid) {
			gtkspell_notrunning();
		}
	}
	if(pid < 0 && errno != ECHILD) {
		char errmsg[BUFSIZ];
		sprintf(errmsg, "Warning: waitpid() returned %d", pid);
		perror(errmsg);
	}
}

struct aim_user *find_user(const char *name, int protocol)
{
	char *who = g_strdup(normalize(name));
	GSList *usr = aim_users;
	struct aim_user *u;

	while (usr) {
		u = (struct aim_user *)usr->data;
		if (!strcmp(normalize(u->username), who)) {
			if (protocol != -1) {
				if (u->protocol == protocol) {
					g_free(who);
					return u;
				}
			} else {
				g_free(who);
				return u;
			}

		}
		usr = usr->next;
	}
	g_free(who);
	return NULL;
}


/* Look for %n, %d, or %t in msg, and replace with the sender's name, date,
   or time */
char *away_subs(char *msg, char *name)
{
	char *c;
	static char cpy[BUF_LONG];
	int cnt = 0;
	time_t t = time(0);
	struct tm *tme = localtime(&t);
	char tmp[20];

	cpy[0] = '\0';
	c = msg;
	while (*c) {
		switch (*c) {
		case '%':
			if (*(c + 1)) {
				switch (*(c + 1)) {
				case 'n':
					/* append name */
					strcpy(cpy + cnt, name);
					cnt += strlen(name);
					c++;
					break;
				case 'd':
					/* append date */
					strftime(tmp, 20, "%m/%d/%Y", tme);
					strcpy(cpy + cnt, tmp);
					cnt += strlen(tmp);
					c++;
					break;
				case 't':
					/* append time */
					strftime(tmp, 20, "%r", tme);
					strcpy(cpy + cnt, tmp);
					cnt += strlen(tmp);
					c++;
					break;
				default:
					cpy[cnt++] = *c;
				}
			}
			break;
		default:
			cpy[cnt++] = *c;
		}
		c++;
	}
	cpy[cnt] = '\0';
	return (cpy);
}

char *stylize(gchar *text, int length)
{
	gchar *buf;
	char *tmp = g_malloc(length);

	buf = g_malloc(length);
	g_snprintf(buf, length, "%s", text);

	if (font_options & OPT_FONT_BOLD) {
		g_snprintf(tmp, length, "<B>%s</B>", buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_ITALIC) {
		g_snprintf(tmp, length, "<I>%s</I>", buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_UNDERLINE) {
		g_snprintf(tmp, length, "<U>%s</U>", buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_STRIKE) {
		g_snprintf(tmp, length, "<S>%s</S>", buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_FACE) {
		g_snprintf(tmp, length, "<FONT FACE=\"%s\">%s</FONT>", fontface, buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_SIZE) {
		g_snprintf(tmp, length, "<FONT SIZE=\"%d\">%s</FONT>", fontsize, buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_FGCOL) {
		g_snprintf(tmp, length, "<FONT COLOR=\"#%02X%02X%02X\">%s</FONT>", fgcolor.red,
			   fgcolor.green, fgcolor.blue, buf);
		strcpy(buf, tmp);
	}

	if (font_options & OPT_FONT_BGCOL) {
		g_snprintf(tmp, length, "<BODY BGCOLOR=\"#%02X%02X%02X\">%s</BODY>", bgcolor.red,
			   bgcolor.green, bgcolor.blue, buf);
		strcpy(buf, tmp);
	}

	g_free(tmp);
	return buf;
}

void show_usage(int mode, char *name)
{
	switch (mode) {
	case 0:		/* full help text */
		printf("Gaim %s\n"
		       "Usage: %s [OPTION]...\n\n"
		       "  -a, --acct          display account editor window\n"
		       "  -w, --away[=MESG]   make away on signon (optional argument MESG specifies\n"
		       "                      name of away message to use)\n"
		       "  -l, --login[=NAME]  automatically login (optional argument NAME specifies\n"
		       "                      account(s) to use)\n"
		       "  -n, --loginwin      don't automatically login; show login window\n"
		       "  -u, --user=NAME     use account NAME\n"
		       "  -f, --file=FILE     use FILE as config\n"
		       "  -d, --debug         print debugging messages to stdout\n"
		       "  -v, --version       display the current version and exit\n"
		       "  -h, --help          display this help and exit\n", VERSION, name);
		break;
	case 1:		/* short message */
		printf("Gaim %s. Try `%s -h' for more information.\n", VERSION, name);
		break;
	}
}


/* <name> is a comma-separated list of names, or NULL
   if NULL and there is at least one user defined in .gaimrc, try to login.
   if not NULL, parse <name> into separate strings, look up each one in 
   .gaimrc and, if it's there, try to login.
   returns:  0 if successful
            -1 if no user was found that had a saved password
*/
int do_auto_login(char *name)
{
	struct aim_user *u;
	char **names, **n;
	int retval = -1;

	if (name !=NULL) {	/* list of names given */
		names = g_strsplit(name, ",", 32);
		for (n = names; *n != NULL; n++) {
			u = find_user(*n, -1);
			if (u) {	/* found a user */
				if (u->options & OPT_USR_REM_PASS) {
					retval = 0;
					serv_login(u);
				}
			}
		}
		g_strfreev(names);
	} else {		/* no name given, use default */
		u = (struct aim_user *)aim_users->data;
		if (u->options & OPT_USR_REM_PASS) {
			retval = 0;
			serv_login(u);
		}
	}

	return retval;
}

GSList *message_split(char *message, int limit)
{
	static GSList *ret = NULL;
	int lastgood = 0, curgood = 0, curpos = 0, len = strlen(message);
	gboolean intag = FALSE;

	if (ret) {
		GSList *tmp = ret;
		while (tmp) {
			g_free(tmp->data);
			tmp = g_slist_remove(tmp, tmp->data);
		}
		ret = NULL;
	}

	while (TRUE) {
		if (lastgood >= len)
			return ret;

		if (len - lastgood < limit) {
			ret = g_slist_append(ret, g_strdup(&message[lastgood]));
			return ret;
		}

		curgood = curpos = 0;
		intag = FALSE;
		while (curpos <= limit) {
			if (isspace(message[curpos + lastgood]) && !intag)
				curgood = curpos;
			if (message[curpos + lastgood] == '<')
				intag = TRUE;
			if (message[curpos + lastgood] == '>')
				intag = FALSE;
			curpos++;
		}

		if (curgood) {
			ret = g_slist_append(ret, g_strndup(&message[lastgood], curgood));
			if (isspace(message[curgood + lastgood]))
				lastgood += curgood + 1;
			else
				lastgood += curgood;
		} else {
			/* whoops, guess we have to fudge it here */
			ret = g_slist_append(ret, g_strndup(&message[lastgood], limit));
			lastgood += limit;
		}
	}
}

/* returns a string of the form ~/.gaim, where ~ is replaced by the user's home
 * dir. this string should be freed after it's used. Note that there is no
 * trailing slash after .gaim. */
gchar *gaim_user_dir()
{
	return g_strjoin(G_DIR_SEPARATOR_S, g_get_home_dir(), ".gaim", NULL);
}

/*
 * rcg10312000 This could be more robust, but it works for my current
 *  goal: to remove those annoying <BR> tags.  :)
 * dtf12162000 made the loop more readable. i am a neat freak. ;) */
void strncpy_nohtml(gchar *dest, const gchar *src, size_t destsize)
{
	gchar *ptr;
	g_snprintf(dest, destsize, "%s", src);

	while ((ptr = strstr(dest, "<BR>")) != NULL) {
		/* replace <BR> with a newline. */
		*ptr = '\n';
		memmove(ptr + 1, ptr + 4, strlen(ptr + 4) + 1);
	}
}

void strncpy_withhtml(gchar *dest, const gchar *src, size_t destsize)
{
	gchar *end = dest + destsize;

	while (dest < end) {
		if (*src == '\n' && dest < end - 5) {
			strcpy(dest, "<BR>");
			src++;
			dest += 4;
		} else {
			*dest++ = *src;
			if (*src == '\0')
				return;
			else
				src++;
		}
	}
}


/*
 * Like strncpy_withhtml (above), but malloc()'s the necessary space
 *
 * The caller is responsible for freeing the space pointed to by the
 * return value.
 */

gchar *strdup_withhtml(const gchar *src)
{
	gchar *sp, *dest;
	gulong destsize;

	/*
	 * All we need do is multiply the number of newlines by 3 (the
	 * additional length of "<BR>" over "\n"), account for the
	 * terminator, malloc the space and call strncpy_withhtml.
	 */
	for(destsize = 0, sp = (gchar *)src; (sp = strchr(sp, '\n')) != NULL; ++sp, ++destsize)
		;
	destsize *= 3;
	destsize += strlen(src) + 1;
	dest = g_malloc(destsize);
	strncpy_withhtml(dest, src, destsize);

	return(dest);
}

void away_on_login(char *mesg)
{
	GSList *awy = away_messages;
	struct away_message *a, *message = NULL;

	if (!blist) {
		return;
	}

	if (mesg == NULL) {
		/* Use default message */
		do_away_message(NULL, default_away);
	} else {
		/* Use argument */
		while (awy) {
			a = (struct away_message *)awy->data;
			if (strcmp(a->name, mesg) == 0) {
				message = a;
				break;
			}
			awy = awy->next;
		}
		if (message == NULL)
			message = default_away;
		do_away_message(NULL, message);
	}
	return;
}

void system_log(enum log_event what, struct gaim_connection *gc, struct buddy *who, int why)
{
	FILE *fd;
	char text[256], html[256];

	if ((logging_options & why) != why)
		return;

	if (logging_options & OPT_LOG_INDIVIDUAL) {
		if (why & OPT_LOG_MY_SIGNON)
			fd = open_system_log_file(gc ? gc->username : NULL);
		else
			fd = open_system_log_file(who->name);
	} else
		fd = open_system_log_file(NULL);

	if (!fd)
		return;

	if (why & OPT_LOG_MY_SIGNON) {
		switch (what) {
		case log_signon:
			g_snprintf(text, sizeof(text), "+++ %s (%s) signed on @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "<B>%s</B>", text);
			break;
		case log_signoff:
			g_snprintf(text, sizeof(text), "+++ %s (%s) signed off @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "<I><FONT COLOR=GRAY>%s</FONT></I>", text);
			break;
		case log_away:
			g_snprintf(text, sizeof(text), "+++ %s (%s) changed away state @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=OLIVE>%s</FONT>", text);
			break;
		case log_back:
			g_snprintf(text, sizeof(text), "+++ %s (%s) came back @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		case log_idle:
			g_snprintf(text, sizeof(text), "+++ %s (%s) became idle @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=GRAY>%s</FONT>", text);
			break;
		case log_unidle:
			g_snprintf(text, sizeof(text), "+++ %s (%s) returned from idle @ %s",
				   gc->username, gc->prpl->name(), full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		case log_quit:
			g_snprintf(text, sizeof(text), "+++ Program exit @ %s", full_date());
			g_snprintf(html, sizeof(html), "<I><FONT COLOR=GRAY>%s</FONT></I>", text);
			break;
		}
	} else if (strcmp(who->name, who->show)) {
		switch (what) {
		case log_signon:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s (%s) signed on @ %s",
				   gc->username, gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "<B>%s</B>", text);
			break;
		case log_signoff:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s (%s) signed off @ %s",
				   gc->username, gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "<I><FONT COLOR=GRAY>%s</FONT></I>", text);
			break;
		case log_away:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s (%s) went away @ %s",
				   gc->username, gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=OLIVE>%s</FONT>", text);
			break;
		case log_back:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s (%s) came back @ %s",
				   gc->username, gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		case log_idle:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s (%s) became idle @ %s",
				   gc->username, gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=GRAY>%s</FONT>", text);
			break;
		case log_unidle:
			g_snprintf(text, sizeof(text),
				   "%s (%s) reported that %s (%s) returned from idle @ %s", gc->username,
				   gc->prpl->name(), who->show, who->name, full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		default:
			fclose(fd);
			return;
			break;
		}
	} else {
		switch (what) {
		case log_signon:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s signed on @ %s",
				   gc->username, gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "<B>%s</B>", text);
			break;
		case log_signoff:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s signed off @ %s",
				   gc->username, gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "<I><FONT COLOR=GRAY>%s</FONT></I>", text);
			break;
		case log_away:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s went away @ %s",
				   gc->username, gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=OLIVE>%s</FONT>", text);
			break;
		case log_back:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s came back @ %s",
				   gc->username, gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		case log_idle:
			g_snprintf(text, sizeof(text), "%s (%s) reported that %s became idle @ %s",
				   gc->username, gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "<FONT COLOR=GRAY>%s</FONT>", text);
			break;
		case log_unidle:
			g_snprintf(text, sizeof(text),
				   "%s (%s) reported that %s returned from idle @ %s", gc->username,
				   gc->prpl->name(), who->name, full_date());
			g_snprintf(html, sizeof(html), "%s", text);
			break;
		default:
			fclose(fd);
			return;
			break;
		}
	}

	if (logging_options & OPT_LOG_STRIP_HTML) {
		fprintf(fd, "---- %s ----\n", text);
	} else {
		if (logging_options & OPT_LOG_INDIVIDUAL)
			fprintf(fd, "<HR>%s<BR><HR><BR>\n", html);
		else
			fprintf(fd, "%s<BR>\n", html);
	}

	fclose(fd);
}

char *convert_string(char *str, const char *destset, const char *srcset)
{
#ifdef HAVE_ICONV
	char *buf;
	iconv_t cd;
	size_t insize = 0;
	size_t outsize = 0;
	size_t nconv = 0;
	char *inptr;
	char *outptr;
	char *ret;

	if (!str) 
		return NULL; 
	buf = g_malloc(strlen(str)*4);
	insize = strlen(str);
	inptr = str;
	outsize = strlen(str)*4;
	outptr = buf;

	cd = iconv_open(destset, srcset);
	if (cd == (iconv_t) -1) {
		g_free(buf);
		debug_printf("iconv_open(%s, %s) Error\n",destset, srcset);
		return g_strdup(str);
	}

	nconv = iconv(cd, &inptr, &insize, &outptr, &outsize);
	if (nconv == (size_t) -1) {
		debug_printf("iconv Error\n");
		g_free(buf);
		return g_strdup(str);
	}
	*outptr = '\0';
	iconv_close(cd);

	ret = g_strdup(buf);
	g_free(buf);

	return ret;
#else
	return g_strdup(str);
#endif
}

void strip_linefeed(gchar *text)
{
	int i, j;
	gchar *text2 = g_malloc(strlen(text) + 1);

	for (i = 0, j = 0; text[i]; i++)
		if (text[i] != '\r')
			text2[j++] = text[i];
	text2[j] = '\0';

	strcpy(text, text2);
	g_free(text2);
}

char *add_cr(char *text)
{
	char *ret = NULL;
	int count = 0, i, j;

	if (text[0] == '\n')
		count++;
	for (i = 1; i < strlen(text); i++)
		if (text[i] == '\n' && text[i - 1] != '\r')
			count++;

	if (count == 0)
		return g_strdup(text);

	ret = g_malloc0(strlen(text) + count + 1);

	i = 0; j = 0;
	if (text[i] == '\n')
		ret[j++] = '\r';
	ret[j++] = text[i++];
	for (; i < strlen(text); i++) {
		if (text[i] == '\n' && text[i - 1] != '\r')
			ret[j++] = '\r';
		ret[j++] = text[i];
	}

	debug_printf("got: %s, leaving with %s\n", text, ret);

	return ret;
}

time_t get_time(int year, int month, int day, int hour, int min, int sec)
{
	struct tm tm;

	tm.tm_year = year - 1900;
	tm.tm_mon = month - 1;
	tm.tm_mday = day;
	tm.tm_hour = hour;
	tm.tm_min = min;
	tm.tm_sec = sec >= 0 ? sec : time(NULL) % 60;
	return mktime(&tm);
}

/*
 * Like mkstemp() but returns a file pointer, uses a pre-set template,
 * uses the semantics of tempnam() for the directory to use and allocates
 * the space for the filepath.
 *
 * Caller is responsible for closing the file and removing it when done,
 * as well as freeing the space pointed-to by "path" with g_free().
 *
 * Returns NULL on failure and cleans up after itself if so.
 */
static const char *gaim_mkstemp_templ = {"gaimXXXXXX"};

FILE *gaim_mkstemp(gchar **fpath)
{
	const gchar *tmpdir;
	int fd;
	FILE *fp = NULL;

	if((tmpdir = g_get_tmp_dir()) != NULL) {
		if((*fpath = g_strdup_printf("%s/%s", tmpdir, gaim_mkstemp_templ)) != NULL) {
			if((fd = mkstemp(*fpath)) == -1) {
				debug_printf("Error: Couldn't make \"%s\", error: %d\n", *fpath, errno);
			} else {
				if((fp = fdopen(fd, "r+")) == NULL) {
					close(fd);
					debug_printf("Error: Couldn't fdopen(), error: %d\n", errno);
				}
			}
			if(!fp) {
				g_free(*fpath);
				*fpath = NULL;
			}
		}
	} else {
		debug_printf("Error: g_get_tmp_dir() failed in gaim_mkstemp()!\n");
	}

	return fp;
}

/* AIM URI's ARE FUN :-D */
const char *handle_uri(char *uri) {
	GString *str;
	GSList *conn = connections;
	struct gaim_connection *gc;

	debug_printf("Handling URI: %s\n", uri);
	
	/* Well, we'd better check to make sure we have at least one
	   AIM account connected. */
	while (gc = conn->data) {
		if (gc->protocol == PROTO_TOC) {
			break;
		}
		conn = conn->next;
	}

	if (gc == NULL)
		return "Not connected to AIM";

 	/* aim:goim?screenname=screenname&message=message */
	if (!g_strncasecmp(uri, "aim:goim?", strlen("aim:goim?"))) {
		char *who, *what;
		struct conversation *c;
		uri = uri + strlen("aim:goim?");
		
		if (!(who = strstr(uri, "screenname="))) {
			return "No screenname given.";
		}
		/* spaces are encoded as +'s */
		who = who + strlen("screenname=");
		str = g_string_new(NULL);
		while (*who && (*who != '&')) {
			g_string_append_c(str, *who == '+' ? ' ' : *who);
			who++;
		}
		who = g_strdup(str->str);
		g_string_free(str, TRUE);
		
		what = strstr(uri, "message=");
		if (what) {
			what = what + strlen("message=");
			str = g_string_new(NULL);
			while (*what && (*what != '&' || !g_strncasecmp(what, "&amp;", 5))) {
				g_string_append_c(str, *what == '+' ? ' ' : *what);
				what++;
			}
			what = g_strdup(str->str);
			g_string_free(str, TRUE);
		}
		
		c = new_conversation(who);
		set_convo_gc(c, gc);
		g_free(who);
		if (what) {
			int finish;
			gtk_editable_insert_text(GTK_EDITABLE(c->entry),
					 what, strlen(what), &finish);
			g_free(what);
		}
	} else if (!g_strncasecmp(uri, "aim:addbuddy?", strlen("aim:addbuddy?"))) {
		char *who, *group;
		uri = uri + strlen("aim:addbuddy?");
		/* spaces are encoded as +'s */
		
		if (!(who = strstr(uri, "screenname="))) {
			return "No screenname given.";
		}
		who = who + strlen("screenname=");
		str = g_string_new(NULL);
		while (*who && (*who != '&')) {
			g_string_append_c(str, *who == '+' ? ' ' : *who);
			who++;
		}
		who = g_strdup(str->str);
		g_string_free(str, TRUE);

		group = strstr(uri, "group=");
		if (group) {
			group = group + strlen("group=");
			str = g_string_new(NULL);
			while (*group && (*group != '&' || !g_strncasecmp(group, "&amp;", 5))) {
				g_string_append_c(str, *group == '+' ? ' ' : *group);
				group++;
			}
			group = g_strdup(str->str);
			g_string_free(str, TRUE);
		}
		debug_printf("who: %s\n", who);
		show_add_buddy(gc, who, group, NULL);
		g_free(who);
		if (group)
			g_free(group);
	} else if (!g_strncasecmp(uri, "aim:gochat?", strlen("aim:gochat?"))) {
		char *room;
		GList *chat=NULL;
		int exch = 5;
		
		uri = uri + strlen("aim:gochat?");
		/* spaces are encoded as +'s */
		
		if (!(room = strstr(uri, "roomname="))) {
			return "No roomname given.";
		}
		room = room + strlen("roomname=");
		str = g_string_new(NULL);
		while (*room && (*room != '&')) {
			g_string_append_c(str, *room == '+' ? ' ' : *room);
			room++;
		}
		room = g_strdup(str->str);
		g_string_free(str, TRUE);
		chat = g_list_append(NULL, room);
		chat = g_list_append(chat, &exch);
		serv_join_chat(gc, chat);
		g_free(room);
		g_list_free(chat);
	} else {
		return "Invalid AIM URI";
	}
	
	
	return NULL;
}