--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mcabber/mcabber/utils.c Mon Jan 18 15:36:19 2010 +0200
@@ -0,0 +1,789 @@
+/*
+ * utils.c -- Various utility functions
+ *
+ * Copyright (C) 2005-2009 Mikael Berthe <mikael@lilotux.net>
+ * Some of the ut_* functions are derived from Cabber debug/log code.
+ * from_iso8601() comes from the Pidgin (libpurple) project.
+ *
+ * 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
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#ifdef HAVE_LIBIDN
+#include <idna.h>
+#include <stringprep.h>
+static char idnprep[1024];
+#endif
+
+#include <glib.h>
+#include <glib/gprintf.h>
+
+/* For Cygwin (thanks go to Yitzchak Scott-Thoennes) */
+#ifdef __CYGWIN__
+# define timezonevar
+ extern long timezone;
+#endif
+#include <time.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ctype.h>
+
+#include "utils.h"
+#include "logprint.h"
+
+static int DebugEnabled;
+static char *FName;
+
+// jidtodisp(jid)
+// Strips the resource part from the jid
+// The caller should g_free the result after use.
+char *jidtodisp(const char *fjid)
+{
+ char *ptr;
+ char *alias;
+
+ alias = g_strdup(fjid);
+
+ if ((ptr = strchr(alias, JID_RESOURCE_SEPARATOR)) != NULL) {
+ *ptr = 0;
+ }
+ return alias;
+}
+
+char *jid_get_username(const char *fjid)
+{
+ char *ptr;
+ char *username;
+
+ username = g_strdup(fjid);
+ if ((ptr = strchr(username, JID_DOMAIN_SEPARATOR)) != NULL) {
+ *ptr = 0;
+ }
+ return username;
+}
+
+char *compose_jid(const char *username, const char *servername,
+ const char *resource)
+{
+ char *fjid;
+
+ if (!strchr(username, JID_DOMAIN_SEPARATOR)) {
+ fjid = g_strdup_printf("%s%c%s%c%s", username,
+ JID_DOMAIN_SEPARATOR, servername,
+ JID_RESOURCE_SEPARATOR, resource);
+ } else {
+ fjid = g_strdup_printf("%s%c%s", username,
+ JID_RESOURCE_SEPARATOR, resource);
+ }
+ return fjid;
+}
+
+gboolean jid_equal(const char *jid1, const char *jid2)
+{
+ char *a,*b;
+ int ret;
+ if (!jid1 && !jid2)
+ return TRUE;
+ if (!jid1 || !jid2)
+ return FALSE;
+
+ a = jidtodisp(jid1);
+ b = jidtodisp(jid2);
+ ret = strcasecmp(a, b);
+ g_free(a);
+ g_free(b);
+ return (ret == 0) ? TRUE : FALSE;
+}
+
+// expand_filename(filename)
+// Expand "~/" with the $HOME env. variable in a file name.
+// The caller must free the string after use.
+char *expand_filename(const char *fname)
+{
+ if (!fname)
+ return NULL;
+ if (!strncmp(fname, "~/", 2)) {
+ char *homedir = getenv("HOME");
+ if (homedir)
+ return g_strdup_printf("%s%s", homedir, fname+1);
+ }
+ return g_strdup(fname);
+}
+
+void fingerprint_to_hex(const unsigned char *fpr, char hex[49])
+{
+ int i;
+ char *p;
+
+ for (p = hex, i = 0; i < 15; i++, p+=3)
+ g_sprintf(p, "%02X:", fpr[i]);
+ g_sprintf(p, "%02X", fpr[i]);
+ hex[48] = '\0';
+}
+
+gboolean hex_to_fingerprint(const char *hex, char fpr[16])
+{
+ int i;
+ char *p;
+
+ if (strlen(hex) != 47)
+ return FALSE;
+ for (i = 0, p = (char*)hex; *p && *(p+1); i++, p += 3)
+ fpr[i] = (char) g_ascii_strtoull (p, NULL, 16);
+ return TRUE;
+}
+
+void ut_InitDebug(int level, const char *filename)
+{
+ FILE *fp;
+ struct stat buf;
+ int err;
+
+ if (level < 1) {
+ DebugEnabled = 0;
+ FName = NULL;
+ return;
+ }
+
+ if (filename)
+ FName = expand_filename(filename);
+ else {
+ FName = getenv("HOME");
+ if (!FName)
+ FName = g_strdup("/tmp/mcabberlog");
+ else {
+ FName = g_strdup_printf("%s/mcabberlog", FName);
+ }
+ }
+
+ DebugEnabled = level;
+
+ fp = fopen(FName, "a");
+ if (!fp) {
+ fprintf(stderr, "ERROR: Cannot open tracelog file\n");
+ return;
+ }
+
+ err = fstat(fileno(fp), &buf);
+ if (err || buf.st_uid != geteuid()) {
+ fclose(fp);
+ DebugEnabled = 0;
+ FName = NULL;
+ if (err) {
+ fprintf(stderr, "ERROR: cannot stat the tracelog file!\n");
+ } else {
+ fprintf(stderr, "ERROR: tracelog file does not belong to you!\n");
+ }
+ return;
+ }
+ fchmod(fileno(fp), S_IRUSR|S_IWUSR);
+
+ fprintf(fp, "New trace log started.\n----------------------\n");
+ fclose(fp);
+}
+
+void ut_WriteLog(unsigned int flag, const char *data)
+{
+ if (!DebugEnabled || !FName) return;
+
+ if (((DebugEnabled >= 2) && (flag & (LPRINT_LOG|LPRINT_DEBUG))) ||
+ ((DebugEnabled == 1) && (flag & LPRINT_LOG))) {
+ FILE *fp = fopen(FName, "a+");
+ if (!fp) {
+ scr_LogPrint(LPRINT_NORMAL, "ERROR: Cannot open tracelog file");
+ return;
+ }
+ if (fputs(data, fp) == EOF)
+ scr_LogPrint(LPRINT_NORMAL, "ERROR: Cannot write to tracelog file");
+ fclose(fp);
+ }
+}
+
+// checkset_perm(name, setmode)
+// Check the permissions of the "name" file/dir
+// If setmode is true, correct the permissions if they are wrong
+// Return values: -1 == bad file/dir, 0 == success, 1 == cannot correct
+int checkset_perm(const char *name, unsigned int setmode)
+{
+ int fd;
+ struct stat buf;
+
+#ifdef __CYGWIN__
+ // Permission checking isn't efficient on Cygwin
+ return 0;
+#endif
+
+ fd = stat(name, &buf);
+ if (fd == -1) return -1;
+
+ if (buf.st_uid != geteuid()) {
+ scr_LogPrint(LPRINT_LOGNORM, "Wrong file owner [%s]", name);
+ return 1;
+ }
+
+ if (buf.st_mode & (S_IRGRP | S_IWGRP | S_IXGRP) ||
+ buf.st_mode & (S_IROTH | S_IWOTH | S_IXOTH)) {
+ if (setmode) {
+ mode_t newmode = 0;
+ scr_LogPrint(LPRINT_LOGNORM, "Bad permissions [%s]", name);
+ if (S_ISDIR(buf.st_mode))
+ newmode |= S_IXUSR;
+ newmode |= S_IRUSR | S_IWUSR;
+ if (chmod(name, newmode)) {
+ scr_LogPrint(LPRINT_LOGNORM, "WARNING: Failed to correct permissions!");
+ return 1;
+ }
+ scr_LogPrint(LPRINT_LOGNORM, "Permissions have been corrected");
+ } else {
+ scr_LogPrint(LPRINT_LOGNORM, "WARNING: Bad permissions [%s]", name);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+const char *ut_get_tmpdir(void)
+{
+ static const char *tmpdir;
+ const char *tmpvars[] = { "MCABBERTMPDIR", "TMP", "TMPDIR", "TEMP" };
+ unsigned int i;
+
+ if (tmpdir)
+ return tmpdir;
+
+ for (i = 0; i < (sizeof(tmpvars) / sizeof(const char *)); i++) {
+ tmpdir = getenv(tmpvars[i]);
+ if (tmpdir && tmpdir[0] && tmpdir[0] == '/' && tmpdir[1]) {
+ // Looks ok.
+ return tmpdir;
+ }
+ }
+
+ // Default temporary directory
+ tmpdir = "/tmp";
+ return tmpdir;
+}
+
+// to_iso8601(dststr, timestamp)
+// Convert timestamp to iso8601 format, and store it in dststr.
+// NOTE: dststr should be at last 19 chars long.
+// Return should be 0
+int to_iso8601(char *dststr, time_t timestamp)
+{
+ struct tm *tm_time;
+ int ret;
+
+ tm_time = gmtime(×tamp);
+
+ ret = snprintf(dststr, 19, "%.4d%02d%02dT%02d:%02d:%02dZ",
+ (int)(1900+tm_time->tm_year), tm_time->tm_mon+1, tm_time->tm_mday,
+ tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec);
+
+ return ((ret == -1) ? -1 : 0);
+}
+
+// from_iso8601(timestamp, utc)
+// This function came from the Pidgin project, gaim_str_to_time().
+// (Actually date may not be pure iso-8601)
+// Thanks, guys!
+// ** Modified by somian 10 Apr 2006 with advice from ysth.
+time_t from_iso8601(const char *timestamp, int utc)
+{
+ struct tm t;
+ time_t retval = 0;
+ char buf[32];
+ char *c;
+ int tzoff = 0;
+ int hms_succ = 0;
+ int tmpyear;
+
+ time(&retval);
+ localtime_r(&retval, &t);
+
+ /* Reset time to midnight (00:00:00) */
+ t.tm_hour = t.tm_min = t.tm_sec = 0;
+
+ snprintf(buf, sizeof(buf), "%s", timestamp);
+ c = buf;
+
+ /* 4 digit year */
+ if (!sscanf(c, "%04d", &tmpyear)) return 0;
+ t.tm_year = tmpyear;
+ c+=4;
+ if (*c == '-')
+ c++;
+
+ t.tm_year -= 1900;
+
+ /* 2 digit month */
+ if (!sscanf(c, "%02d", &t.tm_mon)) return 0;
+ c+=2;
+ if (*c == '-')
+ c++;
+
+ t.tm_mon -= 1;
+
+ /* 2 digit day */
+ if (!sscanf(c, "%02d", &t.tm_mday)) return 0;
+ c+=2;
+ if (*c == 'T' || *c == '.') { /* we have more than a date, keep going */
+ c++; /* skip the "T" */
+
+ /* 2 digit hour */
+ if (sscanf(c, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3)
+ {
+ hms_succ = 1;
+ c += 8;
+ }
+ else if (sscanf(c, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3)
+ {
+ hms_succ = 1;
+ c += 6;
+ }
+
+ if (hms_succ) {
+ int tzhrs, tzmins;
+
+ if (*c == '.') /* dealing with precision we don't care about */
+ c += 4;
+
+ if ((*c == '+' || *c == '-') &&
+ sscanf(c+1, "%02d:%02d", &tzhrs, &tzmins)) {
+ tzoff = tzhrs*60*60 + tzmins*60;
+ if (*c == '+')
+ tzoff *= -1;
+ }
+
+ if (tzoff || utc) {
+#ifdef HAVE_TM_GMTOFF
+ tzoff += t.tm_gmtoff;
+#else
+# ifdef HAVE_TIMEZONE
+ tzset(); /* making sure */
+ tzoff -= timezone;
+# endif
+#endif
+ }
+ }
+ }
+
+ t.tm_isdst = -1;
+
+ retval = mktime(&t);
+
+ retval += tzoff;
+
+ return retval;
+}
+
+/**
+ * Derived from libjabber/jid.c, because the libjabber version is not
+ * really convenient for our usage.
+ *
+ * Check if the full JID is valid
+ * Return 0 if it is valid, non zero otherwise
+ */
+int check_jid_syntax(const char *fjid)
+{
+ const char *str;
+ const char *domain, *resource;
+ int domlen;
+#ifdef HAVE_LIBIDN
+ char *idnpp;
+ int r;
+#endif
+
+ if (!fjid) return 1;
+
+ domain = strchr(fjid, JID_DOMAIN_SEPARATOR);
+
+ /* the username is optional */
+ if (!domain) {
+ domain = fjid;
+ } else {
+ /* node identifiers may not be longer than 1023 bytes */
+ if ((domain == fjid) || (domain-fjid > 1023))
+ return 1;
+ domain++;
+
+#ifdef HAVE_LIBIDN
+ idnpp = idnprep;
+ str = fjid;
+ while (*str != JID_DOMAIN_SEPARATOR)
+ *idnpp++ = *str++;
+ *idnpp = 0;
+
+ r = stringprep(idnprep, 1023, 0, stringprep_xmpp_nodeprep);
+ if (r != STRINGPREP_OK || !idnprep[0])
+ return 1;
+ /* the username looks okay */
+#else
+ /* check for low and invalid ascii characters in the username */
+ for (str = fjid; *str != JID_DOMAIN_SEPARATOR; str++) {
+ if (*str <= ' ' || *str == ':' || *str == JID_DOMAIN_SEPARATOR ||
+ *str == '<' || *str == '>' || *str == '\'' ||
+ *str == '"' || *str == '&') {
+ return 1;
+ }
+ }
+ /* the username is okay as far as we can tell without LIBIDN */
+#endif
+ }
+
+ resource = strchr(domain, JID_RESOURCE_SEPARATOR);
+
+ /* the resource is optional */
+ if (resource) {
+ domlen = resource - domain;
+ resource++;
+ /* resources may not be longer than 1023 bytes */
+ if ((*resource == '\0') || strlen(resource) > 1023)
+ return 1;
+#ifdef HAVE_LIBIDN
+ strncpy(idnprep, resource, sizeof(idnprep));
+ r = stringprep(idnprep, 1023, 0, stringprep_xmpp_resourceprep);
+ if (r != STRINGPREP_OK || !idnprep[0])
+ return 1;
+#endif
+ } else {
+ domlen = strlen(domain);
+ }
+
+ /* there must be a domain identifier */
+ if (domlen == 0) return 1;
+
+ /* and it must not be longer than 1023 bytes */
+ if (domlen > 1023) return 1;
+
+#ifdef HAVE_LIBIDN
+ idnpp = idnprep;
+ str = domain;
+ while (*str != '\0' && *str != JID_RESOURCE_SEPARATOR)
+ *idnpp++ = *str++;
+ *idnpp = 0;
+
+ r = stringprep_nameprep(idnprep, 1023);
+ if (r != STRINGPREP_OK || !idnprep[0])
+ return 1;
+
+ if (idna_to_ascii_8z(idnprep, &idnpp, IDNA_USE_STD3_ASCII_RULES) !=
+ IDNA_SUCCESS)
+ return 1;
+ else
+ free(idnpp);
+#else
+ /* make sure the hostname is valid characters */
+ for (str = domain; *str != '\0' && *str != JID_RESOURCE_SEPARATOR; str++) {
+ if (!(isalnum(*str) || *str == '.' || *str == '-' || *str == '_'))
+ return 1;
+ }
+#endif
+
+ /* it's okay as far as we can tell */
+ return 0;
+}
+
+
+inline void mc_strtolower(char *str)
+{
+ if (!str) return;
+ for ( ; *str; str++)
+ *str = tolower(*str);
+}
+
+// strip_arg_special_chars(string)
+// Remove quotes and backslashes before an escaped quote
+// Only quotes need a backslash
+// Ex.: ["a b"] -> [a b]; [a\"b] -> [a"b]
+void strip_arg_special_chars(char *s)
+{
+ int instring = FALSE;
+ int escape = FALSE;
+ char *p;
+
+ if (!s) return;
+
+ for (p = s; *p; p++) {
+ if (*p == '"') {
+ if (!escape) {
+ instring = !instring;
+ strcpy(p, p+1);
+ p--;
+ } else
+ escape = FALSE;
+ } else if (*p == '\\') {
+ if (!escape) {
+ strcpy(p, p+1);
+ p--;
+ }
+ escape = !escape;
+ } else
+ escape = FALSE;
+ }
+}
+
+// split_arg(arg, n, preservelast)
+// Split the string arg into a maximum of n pieces, taking care of
+// double quotes.
+// Return a null-terminated array of strings. This array should be freed
+// by the caller after use, for example with free_arg_lst().
+// If dontstriplast is true, the Nth argument isn't stripped (i.e. no
+// processing of quote chars)
+char **split_arg(const char *arg, unsigned int n, int dontstriplast)
+{
+ char **arglst;
+ const char *p, *start, *end;
+ unsigned int i = 0;
+ int instring = FALSE;
+ int escape = FALSE;
+
+ arglst = g_new0(char*, n+1);
+
+ if (!arg || !n) return arglst;
+
+ // Skip leading space
+ for (start = arg; *start && *start == ' '; start++) ;
+ // End of string pointer
+ for (end = start; *end; end++) ;
+ // Skip trailing space
+ while (end > start+1 && *(end-1) == ' ')
+ end--;
+
+ for (p = start; p < end; p++) {
+ if (*p == '"' && !escape)
+ instring = !instring;
+ if (*p == '\\' && !escape)
+ escape = TRUE;
+ else if (escape)
+ escape = FALSE;
+ if (*p == ' ' && !instring && i+1 < n) {
+ // end of parameter
+ *(arglst+i) = g_strndup(start, p-start);
+ strip_arg_special_chars(*(arglst+i));
+ for (start = p+1; *start && *start == ' '; start++) ;
+ p = start-1;
+ i++;
+ }
+ }
+
+ if (start < end) {
+ *(arglst+i) = g_strndup(start, end-start);
+ if (!dontstriplast || i+1 < n)
+ strip_arg_special_chars(*(arglst+i));
+ }
+
+ return arglst;
+}
+
+// free_arg_lst(arglst)
+// Free an array allocated by split_arg()
+void free_arg_lst(char **arglst)
+{
+ char **arg_elt;
+
+ for (arg_elt = arglst; *arg_elt; arg_elt++)
+ g_free(*arg_elt);
+ g_free(arglst);
+}
+
+// replace_nl_with_dots(bufstr)
+// Replace '\n' with "(...)" (or with a NUL if the string is too short)
+void replace_nl_with_dots(char *bufstr)
+{
+ char *p = strchr(bufstr, '\n');
+ if (p) {
+ if (strlen(p) >= 5)
+ strcpy(p, "(...)");
+ else
+ *p = 0;
+ }
+}
+
+// ut_expand_tabs(text)
+// Expand tabs and filter out some bad chars in string text.
+// If there is no tab and no bad chars in the string, a pointer to text
+// is returned (be careful _not_ to free the pointer in this case).
+// If there are some tabs or bad chars, a new string with expanded chars
+// and no bad chars is returned; this is up to the caller to free this
+// string after use.
+char *ut_expand_tabs(const char *text)
+{
+ char *xtext, *linestart;
+ char *p, *q;
+ guint n = 0, bc = 0;
+
+ xtext = (char*)text;
+ for (p=xtext; *p; p++)
+ if (*p == '\t')
+ n++;
+ else if (*p == '\x0d')
+ bc++;
+ // XXX Are there other special chars we should filter out?
+
+ if (!n && !bc)
+ return (char*)text;
+
+ xtext = g_new(char, strlen(text) + 1 + 8*n);
+ p = (char*)text;
+ q = linestart = xtext;
+ do {
+ if (*p == '\t') {
+ do { *q++ = ' '; } while ((q-linestart)%8);
+ } else if (*p != '\x0d') {
+ *q++ = *p;
+ if (*p =='\n')
+ linestart = q;
+ }
+ } while (*p++);
+
+ return xtext;
+}
+
+
+/* Cygwin's newlib does not have strcasestr() */
+/* The author of the code before the endif is
+ * Jeffrey Stedfast <fejj@ximian.com>
+ * and this code is reusable in compliance with the GPL v2. -- somian */
+
+#if !defined(HAVE_STRCASESTR)
+
+# define lowercase(c) (isupper ((int) (c)) ? tolower ((int) (c)) : (int) (c))
+# define bm_index(c, icase) ((icase) ? lowercase (c) : (int) (c))
+# define bm_equal(c1, c2, icase) ((icase) ? lowercase (c1) == lowercase (c2) : (c1) == (c2))
+
+/* FIXME: this is just a guess... should really do some performace tests to get an accurate measure */
+# define bm_optimal(hlen, nlen) (((hlen) ? (hlen) > 20 : 1) && (nlen) > 10 ? 1 : 0)
+
+static unsigned char *
+__boyer_moore (const unsigned char *haystack, size_t haystacklen,
+ const unsigned char *needle, size_t needlelen, int icase)
+{
+ register unsigned char *hc_ptr, *nc_ptr;
+ unsigned char *he_ptr, *ne_ptr, *h_ptr;
+ size_t skiptable[256], n;
+ register int i;
+
+#ifdef BOYER_MOORE_CHECKS
+ /* we don't need to do these checks since memmem/strstr/etc do it already */
+ /* if the haystack is shorter than the needle then we can't possibly match */
+ if (haystacklen < needlelen)
+ return NULL;
+
+ /* instant match if the pattern buffer is 0-length */
+ if (needlelen == 0)
+ return (unsigned char *) haystack;
+#endif /* BOYER_MOORE_CHECKS */
+
+ /* set a pointer at the end of each string */
+ ne_ptr = (unsigned char *) needle + needlelen - 1;
+ he_ptr = (unsigned char *) haystack + haystacklen - 1;
+
+ /* create our skip table */
+ for (i = 0; i < 256; i++)
+ skiptable[i] = needlelen;
+ for (nc_ptr = (unsigned char *) needle; nc_ptr < ne_ptr; nc_ptr++)
+ skiptable[bm_index (*nc_ptr, icase)] = (size_t) (ne_ptr - nc_ptr);
+
+ h_ptr = (unsigned char *) haystack;
+ while (haystacklen >= needlelen) {
+ hc_ptr = h_ptr + needlelen - 1; /* set the haystack compare pointer */
+ nc_ptr = ne_ptr; /* set the needle compare pointer */
+
+ /* work our way backwards till they don't match */
+ for (i = 0; nc_ptr > (unsigned char *) needle; nc_ptr--, hc_ptr--, i++)
+ if (!bm_equal (*nc_ptr, *hc_ptr, icase))
+ break;
+
+ if (!bm_equal (*nc_ptr, *hc_ptr, icase)) {
+ n = skiptable[bm_index (*hc_ptr, icase)];
+ if (n == needlelen && i)
+ if (bm_equal (*ne_ptr, ((unsigned char *) needle)[0], icase))
+ n--;
+ h_ptr += n;
+ haystacklen -= n;
+ } else
+ return (unsigned char *) h_ptr;
+ }
+
+ return NULL;
+}
+
+/*
+ * strcasestr:
+ * @haystack: string to search
+ * @needle: substring to search for
+ *
+ * Finds the first occurence of the substring @needle within the
+ * string @haystack ignoring case.
+ *
+ * Returns a pointer to the beginning of the substring match within
+ * @haystack, or NULL if the substring is not found.
+ **/
+char *
+strcasestr (const char *haystack, const char *needle)
+{
+ register unsigned char *h, *n, *hc, *nc;
+ size_t needlelen;
+
+ needlelen = strlen (needle);
+
+ if (needlelen == 0) {
+ return (char *) haystack;
+ } else if (bm_optimal (0, needlelen)) {
+ return (char *) __boyer_moore ((const unsigned char *) haystack,
+ strlen (haystack),
+ (const unsigned char *) needle,
+ needlelen, 1);
+ }
+
+ h = (unsigned char *) haystack;
+ n = (unsigned char *) needle;
+
+ while (*(h + needlelen - 1)) {
+ if (lowercase (*h) == lowercase (*n)) {
+ for (hc = h + 1, nc = n + 1; *hc && *nc; hc++, nc++)
+ if (lowercase (*hc) != lowercase (*nc))
+ break;
+
+ if (!*nc)
+ return (char *) h;
+ }
+ h++;
+ }
+ return NULL;
+}
+#endif /* !HAVE_STRCASESTR */
+
+// startswith(str, word, ignore_case)
+// Returns TRUE if string str starts with word.
+int startswith(const char *str, const char *word, guint ignore_case)
+{
+ if (ignore_case && !strncasecmp(str, word, strlen(word)))
+ return TRUE;
+ else if (!ignore_case && !strncmp(str, word, strlen(word)))
+ return TRUE;
+ return FALSE;
+}
+
+/* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */