/*
Unix SMB/CIFS implementation.
Samba utility functions
+
Copyright (C) Andrew Tridgell 1992-2001
Copyright (C) Simo Sorce 2001-2002
+ Copyright (C) Martin Pool 2003
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
#include "includes.h"
-#ifdef DEVELOPER
-const char *global_clobber_region_function;
-unsigned int global_clobber_region_line;
-#endif
+/**
+ * @file
+ * @brief String utilities.
+ **/
/**
* Get the next token from a string, return False if none found.
BOOL next_token(const char **ptr,char *buff, const char *sep, size_t bufsize)
{
const char *s;
+ char *pbuf;
BOOL quoted;
size_t len=1;
return(False);
/* copy over the token */
+ pbuf = buff;
for (quoted = False; len < bufsize && *s && (quoted || !strchr_m(sep,*s)); s++) {
if (*s == '\"') {
quoted = !quoted;
} else {
len++;
- *buff++ = *s;
+ *pbuf++ = *s;
}
}
*ptr = (*s) ? s+1 : s;
- *buff = 0;
+ *pbuf = 0;
return(True);
}
}
/**
- Case insensitive string compararison.
-**/
-
+ * Case insensitive string compararison.
+ *
+ * iconv does not directly give us a way to compare strings in
+ * arbitrary unix character sets -- all we can is convert and then
+ * compare. This is expensive.
+ *
+ * As an optimization, we do a first pass that considers only the
+ * prefix of the strings that is entirely 7-bit. Within this, we
+ * check whether they have the same value.
+ *
+ * Hopefully this will often give the answer without needing to copy.
+ * In particular it should speed comparisons to literal ascii strings
+ * or comparisons of strings that are "obviously" different.
+ *
+ * If we find a non-ascii character we fall back to converting via
+ * iconv.
+ *
+ * This should never be slower than convering the whole thing, and
+ * often faster.
+ *
+ * A different optimization would be to compare for bitwise equality
+ * in the binary encoding. (It would be possible thought hairy to do
+ * both simultaneously.) But in that case if they turn out to be
+ * different, we'd need to restart the whole thing.
+ *
+ * Even better is to implement strcasecmp for each encoding and use a
+ * function pointer.
+ **/
int StrCaseCmp(const char *s, const char *t)
{
+
+ const char * ps, * pt;
pstring buf1, buf2;
- unix_strupper(s, strlen(s)+1, buf1, sizeof(buf1));
- unix_strupper(t, strlen(t)+1, buf2, sizeof(buf2));
- return strcmp(buf1,buf2);
+
+ for (ps = s, pt = t; ; ps++, pt++) {
+ char us, ut;
+
+ if (!*ps && !*pt)
+ return 0; /* both ended */
+ else if (!*ps)
+ return -1; /* s is a prefix */
+ else if (!*pt)
+ return +1; /* t is a prefix */
+ else if ((*ps & 0x80) || (*pt & 0x80))
+ /* not ascii anymore, do it the hard way from here on in */
+ break;
+
+ us = toupper(*ps);
+ ut = toupper(*pt);
+ if (us == ut)
+ continue;
+ else if (us < ut)
+ return -1;
+ else if (us > ut)
+ return +1;
+ }
+
+ /* TODO: Don't do this with a fixed-length buffer. This could
+ * still be much more efficient. */
+ /* TODO: Hardcode a char-by-char comparison for UTF-8, which
+ * can be much faster. */
+ /* TODO: Test case for this! */
+
+ unix_strupper(ps, strlen(ps)+1, buf1, sizeof(buf1));
+ unix_strupper(pt, strlen(pt)+1, buf2, sizeof(buf2));
+
+ return strcmp(buf1, buf2);
}
+
/**
Case insensitive string compararison, length limited.
**/
-
int StrnCaseCmp(const char *s, const char *t, size_t n)
{
pstring buf1, buf2;
static pstring str;
pstrcpy(str, s);
- strupper(str);
+ strupper_m(str);
return str;
}
{
extern int case_default;
if (case_default == CASE_UPPER)
- strupper(s);
+ strupper_m(s);
else
- strlower(s);
+ strlower_m(s);
}
/**
return(count);
}
-/**
- * In developer builds, clobber a region of memory.
- *
- * If we think a string buffer is longer than it really is, this ought
- * to make the failure obvious, by segfaulting (if in the heap) or by
- * killing the return address (on the stack), or by trapping under a
- * memory debugger.
- *
- * This is meant to catch possible string overflows, even if the
- * actual string copied is not big enough to cause an overflow.
- *
- * In addition, under Valgrind the buffer is marked as uninitialized.
- **/
-void clobber_region(const char *fn, unsigned int line, char *dest, size_t len)
-{
-#ifdef DEVELOPER
- global_clobber_region_function = fn;
- global_clobber_region_line = line;
-
- /* F1 is odd and 0xf1f1f1f1 shouldn't be a valid pointer */
- memset(dest, 0xF1, len);
-#ifdef VALGRIND
- /* Even though we just wrote to this, from the application's
- * point of view it is not initialized.
- *
- * (This is not redundant with the clobbering above. The
- * marking might not actually take effect if we're not running
- * under valgrind or not with --client-perms.) */
- VALGRIND_MAKE_WRITABLE(dest, len);
-#endif /* VALGRIND */
-#endif /* DEVELOPER */
-}
-
-
/**
Safe string copy into a known length string. maxlength does not
include the terminating zero.
return dest;
}
- len = strlen(src);
+ len = strnlen(src, maxlength+1);
if (len > maxlength) {
DEBUG(0,("ERROR: string overflow by %u (%u - %u) in safe_strcpy [%.50s]\n",
if (!src)
return dest;
- src_len = strlen(src);
- dest_len = strlen(dest);
+ src_len = strnlen(src, maxlength + 1);
+ dest_len = strnlen(dest, maxlength + 1);
clobber_region(fn, line, dest + dest_len, maxlength + 1 - dest_len);
*dest = 0;
return(dest);
}
- while (n-- && (*d++ = *src++))
- ;
+
+ while (n-- && (*d = *src)) {
+ d++;
+ src++;
+ }
+
*d = 0;
return(dest);
}
return num_chars;
}
+/**
+ * Routine to print a buffer as HEX digits, into an allocated string.
+ */
+
+void hex_encode(const unsigned char *buff_in, size_t len, char **out_hex_buffer)
+{
+ int i;
+ char *hex_buffer;
+
+ *out_hex_buffer = smb_xmalloc((len*2)+1);
+ hex_buffer = *out_hex_buffer;
+
+ for (i = 0; i < len; i++)
+ slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
+}
+
/**
Check if a string is part of a list.
**/
return (char *)(s+strlen(s2));
}
+/***********************************************************************
+ Return the equivalent of doing strrchr 'n' times - always going
+ backwards.
+***********************************************************************/
+
+char *strnrchr_m(const char *s, char c, unsigned int n)
+{
+ wpstring ws;
+ pstring s2;
+ smb_ucs2_t *p;
+
+ push_ucs2(NULL, ws, s, sizeof(ws), STR_TERMINATE);
+ p = strnrchr_w(ws, UCS2_CHAR(c), n);
+ if (!p)
+ return NULL;
+ *p = 0;
+ pull_ucs2_pstring(s2, ws);
+ return (char *)(s+strlen(s2));
+}
+
/**
Convert a string to lower case.
**/
return ret;
}
-#if 0
+
/**
Just a typesafety wrapper for snprintf into a fstring.
**/
-static int fstr_sprintf(fstring s, const char *fmt, ...)
+int fstr_sprintf(fstring s, const char *fmt, ...)
{
va_list ap;
int ret;
va_end(ap);
return ret;
}
-#endif
+
#ifndef HAVE_STRNDUP
/**
#define IPSTR_LIST_SEP ","
+#define IPSTR_LIST_CHAR ','
/**
* Add ip string representation to ipstr list. Used also
* reallocated to new length
**/
-char* ipstr_list_add(char** ipstr_list, const struct in_addr *ip)
+char* ipstr_list_add(char** ipstr_list, const struct ip_service *service)
{
char* new_ipstr = NULL;
/* arguments checking */
- if (!ipstr_list || !ip) return NULL;
+ if (!ipstr_list || !service) return NULL;
/* attempt to convert ip to a string and append colon separator to it */
if (*ipstr_list) {
- asprintf(&new_ipstr, "%s%s%s", *ipstr_list, IPSTR_LIST_SEP,inet_ntoa(*ip));
+ asprintf(&new_ipstr, "%s%s%s:%d", *ipstr_list, IPSTR_LIST_SEP,
+ inet_ntoa(service->ip), service->port);
SAFE_FREE(*ipstr_list);
} else {
- asprintf(&new_ipstr, "%s", inet_ntoa(*ip));
+ asprintf(&new_ipstr, "%s:%d", inet_ntoa(service->ip), service->port);
}
*ipstr_list = new_ipstr;
return *ipstr_list;
* @return pointer to allocated ip string
**/
-char* ipstr_list_make(char** ipstr_list, const struct in_addr* ip_list, int ip_count)
+char* ipstr_list_make(char** ipstr_list, const struct ip_service* ip_list, int ip_count)
{
int i;
/**
* Parse given ip string list into array of ip addresses
- * (as in_addr structures)
+ * (as ip_service structures)
+ * e.g. 192.168.1.100:389,192.168.1.78, ...
*
* @param ipstr ip string list to be parsed
* @param ip_list pointer to array of ip addresses which is
* @return number of succesfully parsed addresses
**/
-int ipstr_list_parse(const char* ipstr_list, struct in_addr** ip_list)
+int ipstr_list_parse(const char* ipstr_list, struct ip_service **ip_list)
{
fstring token_str;
- int count;
+ size_t count;
+ int i;
- if (!ipstr_list || !ip_list) return 0;
+ if (!ipstr_list || !ip_list)
+ return 0;
+
+ count = count_chars(ipstr_list, IPSTR_LIST_CHAR) + 1;
+ if ( (*ip_list = (struct ip_service*)malloc(count * sizeof(struct ip_service))) == NULL ) {
+ DEBUG(0,("ipstr_list_parse: malloc failed for %d entries\n", count));
+ return 0;
+ }
- for (*ip_list = NULL, count = 0;
- next_token(&ipstr_list, token_str, IPSTR_LIST_SEP, FSTRING_LEN);
- count++) {
-
+ for ( i=0;
+ next_token(&ipstr_list, token_str, IPSTR_LIST_SEP, FSTRING_LEN) && i<count;
+ i++ )
+ {
struct in_addr addr;
+ unsigned port = 0;
+ char *p = strchr(token_str, ':');
+
+ if (p) {
+ *p = 0;
+ port = atoi(p+1);
+ }
/* convert single token to ip address */
if ( (addr.s_addr = inet_addr(token_str)) == INADDR_NONE )
break;
-
- /* prepare place for another in_addr structure */
- *ip_list = Realloc(*ip_list, (count + 1) * sizeof(struct in_addr));
- if (!*ip_list) return -1;
-
- (*ip_list)[count] = addr;
+
+ (*ip_list)[i].ip = addr;
+ (*ip_list)[i].port = port;
}
return count;
{
DATA_BLOB decoded = base64_decode_data_blob(s);
memcpy(s, decoded.data, decoded.length);
- data_blob_free(&decoded);
-
/* null terminate */
s[decoded.length] = '\0';
+
+ data_blob_free(&decoded);
}
/**
return result;
}
+/* read a SMB_BIG_UINT from a string */
+SMB_BIG_UINT STR_TO_SMB_BIG_UINT(const char *nptr, const char **entptr)
+{
+
+ SMB_BIG_UINT val = -1;
+ const char *p = nptr;
+
+ while (p && *p && isspace(*p))
+ p++;
+#ifdef LARGE_SMB_OFF_T
+ sscanf(p,"%llu",&val);
+#else /* LARGE_SMB_OFF_T */
+ sscanf(p,"%lu",&val);
+#endif /* LARGE_SMB_OFF_T */
+ if (entptr) {
+ while (p && *p && isdigit(*p))
+ p++;
+ *entptr = p;
+ }
+
+ return val;
+}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff