diff options
Diffstat (limited to 'source3/libsmb/namecache.c')
| -rw-r--r-- | source3/libsmb/namecache.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/source3/libsmb/namecache.c b/source3/libsmb/namecache.c index 082f256bc02..8fc65675db9 100644 --- a/source3/libsmb/namecache.c +++ b/source3/libsmb/namecache.c @@ -24,6 +24,170 @@ #include "includes.h" #include "lib/gencache.h" +#define IPSTR_LIST_SEP "," +#define IPSTR_LIST_CHAR ',' + +/** + * Add ip string representation to ipstr list. Used also + * as part of @function ipstr_list_make + * + * @param ipstr_list pointer to string containing ip list; + * MUST BE already allocated and IS reallocated if necessary + * @param ipstr_size pointer to current size of ipstr_list (might be changed + * as a result of reallocation) + * @param ip IP address which is to be added to list + * @return pointer to string appended with new ip and possibly + * reallocated to new length + **/ + +static char *ipstr_list_add(char **ipstr_list, const struct ip_service *service) +{ + char *new_ipstr = NULL; + char addr_buf[INET6_ADDRSTRLEN]; + int ret; + + /* arguments checking */ + if (!ipstr_list || !service) { + return NULL; + } + + print_sockaddr(addr_buf, + sizeof(addr_buf), + &service->ss); + + /* attempt to convert ip to a string and append colon separator to it */ + if (*ipstr_list) { + if (service->ss.ss_family == AF_INET) { + /* IPv4 */ + ret = asprintf(&new_ipstr, "%s%s%s:%d", *ipstr_list, + IPSTR_LIST_SEP, addr_buf, + service->port); + } else { + /* IPv6 */ + ret = asprintf(&new_ipstr, "%s%s[%s]:%d", *ipstr_list, + IPSTR_LIST_SEP, addr_buf, + service->port); + } + SAFE_FREE(*ipstr_list); + } else { + if (service->ss.ss_family == AF_INET) { + /* IPv4 */ + ret = asprintf(&new_ipstr, "%s:%d", addr_buf, + service->port); + } else { + /* IPv6 */ + ret = asprintf(&new_ipstr, "[%s]:%d", addr_buf, + service->port); + } + } + if (ret == -1) { + return NULL; + } + *ipstr_list = new_ipstr; + return *ipstr_list; +} + +/** + * Allocate and initialise an ipstr list using ip adresses + * passed as arguments. + * + * @param ipstr_list pointer to string meant to be allocated and set + * @param ip_list array of ip addresses to place in the list + * @param ip_count number of addresses stored in ip_list + * @return pointer to allocated ip string + **/ + +char *ipstr_list_make(char **ipstr_list, + const struct ip_service *ip_list, + int ip_count) +{ + int i; + + /* arguments checking */ + if (!ip_list || !ipstr_list) { + return 0; + } + + *ipstr_list = NULL; + + /* process ip addresses given as arguments */ + for (i = 0; i < ip_count; i++) { + *ipstr_list = ipstr_list_add(ipstr_list, &ip_list[i]); + } + + return (*ipstr_list); +} + + +/** + * Parse given ip string list into array of ip addresses + * (as ip_service structures) + * e.g. [IPv6]:port,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 + * allocated by this function and must be freed by caller + * @return number of successfully parsed addresses + **/ + +int ipstr_list_parse(const char *ipstr_list, struct ip_service **ip_list) +{ + TALLOC_CTX *frame; + char *token_str = NULL; + size_t i, count; + + if (!ipstr_list || !ip_list) + return 0; + + count = count_chars(ipstr_list, IPSTR_LIST_CHAR) + 1; + if ( (*ip_list = SMB_MALLOC_ARRAY(struct ip_service, count)) == NULL ) { + DEBUG(0,("ipstr_list_parse: malloc failed for %lu entries\n", + (unsigned long)count)); + return 0; + } + + frame = talloc_stackframe(); + for ( i=0; next_token_talloc(frame, &ipstr_list, &token_str, + IPSTR_LIST_SEP) && i<count; i++ ) { + char *s = token_str; + char *p = strrchr(token_str, ':'); + + if (p) { + *p = 0; + (*ip_list)[i].port = atoi(p+1); + } + + /* convert single token to ip address */ + if (token_str[0] == '[') { + /* IPv6 address. */ + s++; + p = strchr(token_str, ']'); + if (!p) { + continue; + } + *p = '\0'; + } + if (!interpret_string_addr(&(*ip_list)[i].ss, + s, + AI_NUMERICHOST)) { + continue; + } + } + TALLOC_FREE(frame); + return count; +} + +/** + * Safely free ip string list + * + * @param ipstr_list ip string list to be freed + **/ + +void ipstr_list_free(char* ipstr_list) +{ + SAFE_FREE(ipstr_list); +} + #define NBTKEY_FMT "NBT/%s#%02X" /** |