#include <netinet/in.h>
#include "asterisk/io.h"
Include dependency graph for acl.h:
This graph shows which files directly or indirectly include this file:
Go to the source code of this file.
Defines | |
#define | AST_SENSE_ALLOW 1 |
#define | AST_SENSE_DENY 0 |
Functions | |
ast_ha * | ast_append_ha (char *sense, char *stuff, struct ast_ha *path) |
int | ast_apply_ha (struct ast_ha *ha, struct sockaddr_in *sin) |
ast_ha * | ast_duplicate_ha_list (struct ast_ha *original) |
int | ast_find_ourip (struct in_addr *ourip, struct sockaddr_in bindaddr) |
void | ast_free_ha (struct ast_ha *ha) |
int | ast_get_ip (struct sockaddr_in *sin, const char *value) |
int | ast_get_ip_or_srv (struct sockaddr_in *sin, const char *value, const char *service) |
int | ast_lookup_iface (char *iface, struct in_addr *address) |
int | ast_ouraddrfor (struct in_addr *them, struct in_addr *us) |
int | ast_str2tos (const char *value, int *tos) |
Definition in file acl.h.
#define AST_SENSE_ALLOW 1 |
#define AST_SENSE_DENY 0 |
Definition at line 144 of file acl.c.
References ast_log(), AST_SENSE_ALLOW, AST_SENSE_DENY, free, LOG_DEBUG, LOG_WARNING, malloc, ast_ha::netaddr, ast_ha::netmask, ast_ha::next, and ast_ha::sense.
Referenced by authenticate(), build_device(), build_gateway(), build_peer(), build_user(), and reload_config().
00145 { 00146 struct ast_ha *ha = malloc(sizeof(struct ast_ha)); 00147 char *nm = "255.255.255.255"; 00148 char tmp[256]; 00149 struct ast_ha *prev = NULL; 00150 struct ast_ha *ret; 00151 int x, z; 00152 unsigned int y; 00153 ret = path; 00154 while (path) { 00155 prev = path; 00156 path = path->next; 00157 } 00158 if (ha) { 00159 ast_copy_string(tmp, stuff, sizeof(tmp)); 00160 nm = strchr(tmp, '/'); 00161 if (!nm) { 00162 nm = "255.255.255.255"; 00163 } else { 00164 *nm = '\0'; 00165 nm++; 00166 } 00167 if (!strchr(nm, '.')) { 00168 if ((sscanf(nm, "%d", &x) == 1) && (x >= 0) && (x <= 32)) { 00169 y = 0; 00170 for (z=0;z<x;z++) { 00171 y >>= 1; 00172 y |= 0x80000000; 00173 } 00174 ha->netmask.s_addr = htonl(y); 00175 } 00176 } else if (!inet_aton(nm, &ha->netmask)) { 00177 ast_log(LOG_WARNING, "%s is not a valid netmask\n", nm); 00178 free(ha); 00179 return path; 00180 } 00181 if (!inet_aton(tmp, &ha->netaddr)) { 00182 ast_log(LOG_WARNING, "%s is not a valid IP\n", tmp); 00183 free(ha); 00184 return path; 00185 } 00186 ha->netaddr.s_addr &= ha->netmask.s_addr; 00187 if (!strncasecmp(sense, "p", 1)) { 00188 ha->sense = AST_SENSE_ALLOW; 00189 } else { 00190 ha->sense = AST_SENSE_DENY; 00191 } 00192 ha->next = NULL; 00193 if (prev) { 00194 prev->next = ha; 00195 } else { 00196 ret = ha; 00197 } 00198 } 00199 ast_log(LOG_DEBUG, "%s/%s appended to acl for peer\n", stuff, nm); 00200 return ret; 00201 }
int ast_apply_ha | ( | struct ast_ha * | ha, | |
struct sockaddr_in * | sin | |||
) |
Definition at line 203 of file acl.c.
References ast_inet_ntoa(), ast_log(), AST_SENSE_ALLOW, LOG_DEBUG, ast_ha::netaddr, ast_ha::netmask, ast_ha::next, and ast_ha::sense.
Referenced by ast_sip_ouraddrfor(), authenticate(), check_access(), check_user_full(), register_verify(), and skinny_register().
00204 { 00205 /* Start optimistic */ 00206 int res = AST_SENSE_ALLOW; 00207 while (ha) { 00208 char iabuf[INET_ADDRSTRLEN]; 00209 char iabuf2[INET_ADDRSTRLEN]; 00210 /* DEBUG */ 00211 ast_log(LOG_DEBUG, 00212 "##### Testing %s with %s\n", 00213 ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr), 00214 ast_inet_ntoa(iabuf2, sizeof(iabuf2), ha->netaddr)); 00215 /* For each rule, if this address and the netmask = the net address 00216 apply the current rule */ 00217 if ((sin->sin_addr.s_addr & ha->netmask.s_addr) == ha->netaddr.s_addr) 00218 res = ha->sense; 00219 ha = ha->next; 00220 } 00221 return res; 00222 }
Definition at line 124 of file acl.c.
References ast_duplicate_ha(), and ast_ha::next.
00125 { 00126 struct ast_ha *start=original; 00127 struct ast_ha *ret = NULL; 00128 struct ast_ha *link,*prev=NULL; 00129 00130 while (start) { 00131 link = ast_duplicate_ha(start); /* Create copy of this object */ 00132 if (prev) 00133 prev->next = link; /* Link previous to this object */ 00134 00135 if (!ret) 00136 ret = link; /* Save starting point */ 00137 00138 start = start->next; /* Go to next object */ 00139 prev = link; /* Save pointer to this object */ 00140 } 00141 return ret; /* Return start of list */ 00142 }
int ast_find_ourip | ( | struct in_addr * | ourip, | |
struct sockaddr_in | bindaddr | |||
) |
Definition at line 328 of file acl.c.
References ahp, ast_gethostbyname(), ast_log(), ast_ouraddrfor(), hp, LOG_WARNING, and ourhost.
Referenced by reload_config().
00329 { 00330 char ourhost[MAXHOSTNAMELEN] = ""; 00331 struct ast_hostent ahp; 00332 struct hostent *hp; 00333 struct in_addr saddr; 00334 00335 /* just use the bind address if it is nonzero */ 00336 if (ntohl(bindaddr.sin_addr.s_addr)) { 00337 memcpy(ourip, &bindaddr.sin_addr, sizeof(*ourip)); 00338 return 0; 00339 } 00340 /* try to use our hostname */ 00341 if (gethostname(ourhost, sizeof(ourhost) - 1)) { 00342 ast_log(LOG_WARNING, "Unable to get hostname\n"); 00343 } else { 00344 hp = ast_gethostbyname(ourhost, &ahp); 00345 if (hp) { 00346 memcpy(ourip, hp->h_addr, sizeof(*ourip)); 00347 return 0; 00348 } 00349 } 00350 /* A.ROOT-SERVERS.NET. */ 00351 if (inet_aton("198.41.0.4", &saddr) && !ast_ouraddrfor(&saddr, ourip)) 00352 return 0; 00353 return -1; 00354 }
void ast_free_ha | ( | struct ast_ha * | ha | ) |
Definition at line 94 of file acl.c.
References free, and ast_ha::next.
Referenced by authenticate(), build_peer(), build_user(), destroy_gateway(), destroy_peer(), destroy_user(), sip_destroy_peer(), sip_destroy_user(), and unload_module().
00095 { 00096 struct ast_ha *hal; 00097 while(ha) { 00098 hal = ha; 00099 ha = ha->next; 00100 free(hal); 00101 } 00102 }
int ast_get_ip | ( | struct sockaddr_in * | sin, | |
const char * | value | |||
) |
Definition at line 270 of file acl.c.
References ast_get_ip_or_srv().
Referenced by build_device(), build_gateway(), build_peer(), build_user(), and peer_set_srcaddr().
00271 { 00272 return ast_get_ip_or_srv(sin, value, NULL); 00273 }
int ast_get_ip_or_srv | ( | struct sockaddr_in * | sin, | |
const char * | value, | |||
const char * | service | |||
) |
Definition at line 224 of file acl.c.
References ahp, ast_get_srv(), ast_gethostbyname(), ast_log(), host, hp, and LOG_WARNING.
Referenced by ast_get_ip(), build_peer(), and reload_config().
00225 { 00226 struct hostent *hp; 00227 struct ast_hostent ahp; 00228 char srv[256]; 00229 char host[256]; 00230 int tportno = ntohs(sin->sin_port); 00231 if (inet_aton(value, &sin->sin_addr)) 00232 return 0; 00233 if (service) { 00234 snprintf(srv, sizeof(srv), "%s.%s", service, value); 00235 if (ast_get_srv(NULL, host, sizeof(host), &tportno, srv) > 0) { 00236 sin->sin_port = htons(tportno); 00237 value = host; 00238 } 00239 } 00240 hp = ast_gethostbyname(value, &ahp); 00241 if (hp) { 00242 memcpy(&sin->sin_addr, hp->h_addr, sizeof(sin->sin_addr)); 00243 } else { 00244 ast_log(LOG_WARNING, "Unable to lookup '%s'\n", value); 00245 return -1; 00246 } 00247 return 0; 00248 }
int ast_lookup_iface | ( | char * | iface, | |
struct in_addr * | address | |||
) |
Definition at line 276 of file acl.c.
References ast_log(), and LOG_WARNING.
00277 { 00278 int mysock, res = 0; 00279 struct my_ifreq ifreq; 00280 00281 memset(&ifreq, 0, sizeof(ifreq)); 00282 ast_copy_string(ifreq.ifrn_name, iface, sizeof(ifreq.ifrn_name)); 00283 00284 mysock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 00285 res = ioctl(mysock, SIOCGIFADDR, &ifreq); 00286 00287 close(mysock); 00288 if (res < 0) { 00289 ast_log(LOG_WARNING, "Unable to get IP of %s: %s\n", iface, strerror(errno)); 00290 memcpy((char *)address, (char *)&__ourip, sizeof(__ourip)); 00291 return -1; 00292 } else { 00293 memcpy((char *)address, (char *)&ifreq.ifru_addr.sin_addr, sizeof(ifreq.ifru_addr.sin_addr)); 00294 return 0; 00295 } 00296 }
int ast_ouraddrfor | ( | struct in_addr * | them, | |
struct in_addr * | us | |||
) |
Definition at line 298 of file acl.c.
References ast_log(), LOG_WARNING, and s.
Referenced by ast_find_ourip(), ast_sip_ouraddrfor(), build_device(), build_gateway(), and find_subchannel_and_lock().
00299 { 00300 int s; 00301 struct sockaddr_in sin; 00302 socklen_t slen; 00303 00304 s = socket(PF_INET, SOCK_DGRAM, 0); 00305 if (s < 0) { 00306 ast_log(LOG_WARNING, "Cannot create socket\n"); 00307 return -1; 00308 } 00309 sin.sin_family = AF_INET; 00310 sin.sin_port = 5060; 00311 sin.sin_addr = *them; 00312 if (connect(s, (struct sockaddr *)&sin, sizeof(sin))) { 00313 ast_log(LOG_WARNING, "Cannot connect\n"); 00314 close(s); 00315 return -1; 00316 } 00317 slen = sizeof(sin); 00318 if (getsockname(s, (struct sockaddr *)&sin, &slen)) { 00319 ast_log(LOG_WARNING, "Cannot get socket name\n"); 00320 close(s); 00321 return -1; 00322 } 00323 close(s); 00324 *us = sin.sin_addr; 00325 return 0; 00326 }
int ast_str2tos | ( | const char * | value, | |
int * | tos | |||
) |
Definition at line 250 of file acl.c.
References IPTOS_MINCOST.
Referenced by reload_config(), and set_config().
00251 { 00252 int fval; 00253 if (sscanf(value, "%i", &fval) == 1) 00254 *tos = fval & 0xff; 00255 else if (!strcasecmp(value, "lowdelay")) 00256 *tos = IPTOS_LOWDELAY; 00257 else if (!strcasecmp(value, "throughput")) 00258 *tos = IPTOS_THROUGHPUT; 00259 else if (!strcasecmp(value, "reliability")) 00260 *tos = IPTOS_RELIABILITY; 00261 else if (!strcasecmp(value, "mincost")) 00262 *tos = IPTOS_MINCOST; 00263 else if (!strcasecmp(value, "none")) 00264 *tos = 0; 00265 else 00266 return -1; 00267 return 0; 00268 }