diff options
Diffstat (limited to 'third_party/sipcc/sdp_token.c')
| -rw-r--r-- | third_party/sipcc/sdp_token.c | 1686 |
1 files changed, 1686 insertions, 0 deletions
diff --git a/third_party/sipcc/sdp_token.c b/third_party/sipcc/sdp_token.c new file mode 100644 index 0000000000..b570d81690 --- /dev/null +++ b/third_party/sipcc/sdp_token.c @@ -0,0 +1,1686 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include <errno.h> + +#include "sdp_os_defs.h" +#include "sipcc_sdp.h" +#include "sdp_private.h" + +#include "sdp_log.h" +#include "prprf.h" + +static const char *logTag = "sdp_token"; + +#define MCAST_STRING_LEN 4 + + +sdp_result_e sdp_parse_version (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + sdp_result_e result = SDP_FAILURE; + + sdp_p->version = (uint16_t)sdp_getnextnumtok(ptr, &ptr, " \t", &result); + if ((result != SDP_SUCCESS) || (sdp_p->version != SDP_CURRENT_VERSION)) { + sdp_parse_error(sdp_p, + "%s Invalid version (%u) found, parse failed.", + sdp_p->debug_str, (unsigned)sdp_p->version); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse version line successful, version %u", + sdp_p->debug_str, (unsigned)sdp_p->version); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_version (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + if (sdp_p->version == SDP_INVALID_VALUE) { + if (sdp_p->conf_p->version_reqd == TRUE) { + SDPLogError(logTag, "%s Invalid version for v= line, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } else { + /* v= line is not required. */ + return (SDP_SUCCESS); + } + } + + flex_string_sprintf(fs, "v=%u\r\n", (unsigned)sdp_p->version); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built v= version line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +static sdp_result_e sdp_verify_unsigned(const char *ptr, uint64_t max_value) +{ + uint64_t numeric_value; + /* Checking for only numbers since PR_sscanf will ignore trailing + characters */ + size_t end = strspn(ptr, "0123456789"); + + if (ptr[end] != '\0') + return SDP_INVALID_PARAMETER; + + if (PR_sscanf(ptr, "%llu", &numeric_value) != 1) + return SDP_INVALID_PARAMETER; + + if (numeric_value > max_value) + return SDP_INVALID_PARAMETER; + + return SDP_SUCCESS; +} + +sdp_result_e sdp_parse_owner (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + int i; + sdp_result_e result; + char tmp[SDP_MAX_STRING_LEN]; + /* The spec says this: + + The numeric value of the session id + and version in the o line MUST be representable with a 64 bit signed + integer. The initial value of the version MUST be less than + (2**62)-1, to avoid rollovers. + */ + const uint64_t max_value_sessid = ((((uint64_t) 1) << 63) - 1); + /* Do not check that this is 2^62 - 1; that's just the limit on + * the initial version, not every version number. */ + const uint64_t max_value_version = ((((uint64_t) 1) << 63) - 1); + + if (sdp_p->owner_name[0] != '\0') { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s Warning: More than one o= line specified.", + sdp_p->debug_str); + } + + /* Find the owner name. */ + ptr = sdp_getnextstrtok(ptr, sdp_p->owner_name, sizeof(sdp_p->owner_name), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No owner name specified for o=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Find the owner session id. This is a numeric field but is + * stored as a string since it may be 64 bit. + */ + ptr = sdp_getnextstrtok(ptr, sdp_p->owner_sessid, sizeof(sdp_p->owner_sessid), " \t", &result); + if (result == SDP_SUCCESS) { + /* Make sure the sessid is numeric, even though we store it as + * a string. + */ + result = sdp_verify_unsigned(sdp_p->owner_sessid, max_value_sessid); + } + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s Invalid owner session id specified for o=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Find the owner version. */ + ptr = sdp_getnextstrtok(ptr, sdp_p->owner_version, sizeof(sdp_p->owner_version), " \t", &result); + if (result == SDP_SUCCESS) { + /* Make sure the version is numeric, even though we store it as + * a string. + */ + result = sdp_verify_unsigned(sdp_p->owner_version, max_value_version); + } + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s Invalid owner version specified for o=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Find the owner network type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No owner network type specified for o=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + sdp_p->owner_network_type = SDP_NT_UNSUPPORTED; + for (i=0; i < SDP_MAX_NETWORK_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_nettype[i].name, + sdp_nettype[i].strlen) == 0) { + if (sdp_p->conf_p->nettype_supported[i] == TRUE) { + sdp_p->owner_network_type = (sdp_nettype_e)i; + } + } + } + if (sdp_p->owner_network_type == SDP_NT_UNSUPPORTED) { + sdp_parse_error(sdp_p, + "%s Owner network type unsupported (%s)", + sdp_p->debug_str, tmp); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Find the owner address type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No owner address type specified for o=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + sdp_p->owner_addr_type = SDP_AT_UNSUPPORTED; + for (i=0; i < SDP_MAX_ADDR_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_addrtype[i].name, + sdp_addrtype[i].strlen) == 0) { + if (sdp_p->conf_p->addrtype_supported[i] == TRUE) { + sdp_p->owner_addr_type = (sdp_addrtype_e)i; + } + } + } + if ((sdp_p->owner_addr_type == SDP_AT_UNSUPPORTED) && + (sdp_p->owner_network_type != SDP_NT_ATM)) { + sdp_parse_error(sdp_p, + "%s Owner address type unsupported (%s)", + sdp_p->debug_str, tmp); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Find the owner address. */ + ptr = sdp_getnextstrtok(ptr, sdp_p->owner_addr, sizeof(sdp_p->owner_addr), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No owner address specified.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse owner: name %s, session id %s, version %s", + sdp_p->debug_str, sdp_p->owner_name, sdp_p->owner_sessid, + sdp_p->owner_version); + SDP_PRINT("%s network %s, address type %s, " + "address %s", sdp_p->debug_str, + sdp_get_network_name(sdp_p->owner_network_type), + sdp_get_address_name(sdp_p->owner_addr_type), + sdp_p->owner_addr); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_owner (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + if ((sdp_p->owner_name[0] == '\0') || + (sdp_p->owner_network_type >= SDP_MAX_NETWORK_TYPES) || + (sdp_p->owner_addr_type >= SDP_MAX_ADDR_TYPES) || + (sdp_p->owner_addr[0] == '\0')) { + + if((sdp_p->owner_network_type == SDP_NT_ATM) && + (sdp_p->owner_addr_type == SDP_AT_INVALID)) { + flex_string_sprintf(fs, "o=%s %s %s %s - -\r\n", + sdp_p->owner_name, sdp_p->owner_sessid, + sdp_p->owner_version, + sdp_get_network_name(sdp_p->owner_network_type)); + } + + if (sdp_p->conf_p->owner_reqd == TRUE) { + SDPLogError(logTag, "%s Invalid params for o= owner line, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } else { + /* o= line is not required. */ + return (SDP_SUCCESS); + } + } + + flex_string_sprintf(fs, "o=%s %s %s %s %s %s\r\n", + sdp_p->owner_name, sdp_p->owner_sessid, + sdp_p->owner_version, + sdp_get_network_name(sdp_p->owner_network_type), + sdp_get_address_name(sdp_p->owner_addr_type), + sdp_p->owner_addr); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built o= owner line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_sessname (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + int str_len; + char *endptr; + + if (sdp_p->sessname[0] != '\0') { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s Warning: More than one s= line specified.", + sdp_p->debug_str); + } + + endptr = sdp_findchar(ptr, "\r\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No session name specified.", + sdp_p->debug_str); + } + str_len = MIN(endptr - ptr, SDP_MAX_STRING_LEN); + sstrncpy(sdp_p->sessname, ptr, str_len+1); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse session name, %s", + sdp_p->debug_str, sdp_p->sessname); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_sessname (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + if (sdp_p->sessname[0] == '\0') { + if (sdp_p->conf_p->session_name_reqd == TRUE) { + SDPLogError(logTag, "%s No param defined for s= session name line, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } else { + /* s= line is not required. */ + return (SDP_SUCCESS); + } + } + + flex_string_sprintf(fs, "s=%s\r\n", sdp_p->sessname); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built s= session name line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +/* We don't want to store the session info, but we do want to validate + * that at most one i= line exists at each level and if the line exists + * there should be a parameter. + */ +sdp_result_e sdp_parse_sessinfo (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + sdp_mca_t *mca_p; + + if (level == SDP_SESSION_LEVEL) { + if (sdp_p->sessinfo_found == TRUE) { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s Warning: More than one i= line specified.", + sdp_p->debug_str); + } + sdp_p->sessinfo_found = TRUE; + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + if (mca_p->sessinfo_found == TRUE) { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s Warning: More than one i= line specified" + " for media line %u.", sdp_p->debug_str, (unsigned)level); + } + mca_p->sessinfo_found = TRUE; + } + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No session info specified.", + sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parsed session info line.", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_sessinfo (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build session info line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_uri (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + + if (sdp_p->uri_found == TRUE) { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s Warning: More than one u= line specified.", + sdp_p->debug_str); + } + sdp_p->uri_found = TRUE; + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No URI info specified.", sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parsed URI line.", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_uri (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build URI line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_email (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No email info specified.", sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse email line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_email (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build email line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_phonenum (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No phone number info specified.", + sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse phone number line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_phonenum (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build phone number line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_connection (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + int i; + const char *slash_ptr; + sdp_result_e result; + sdp_conn_t *conn_p; + sdp_mca_t *mca_p; + char tmp[SDP_MAX_STRING_LEN]; + char mcast_str[MCAST_STRING_LEN]; + int mcast_bits; + unsigned long strtoul_result; + char *strtoul_end; + + if (level == SDP_SESSION_LEVEL) { + conn_p = &(sdp_p->default_conn); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + conn_p = &(mca_p->conn); + } + + /* See if the c= line is already defined at this level. We don't + * currently support multihoming and so we only support one c= at + * each level. + */ + if (conn_p->nettype != SDP_NT_INVALID) { + sdp_p->conf_p->num_invalid_token_order++; + sdp_parse_error(sdp_p, + "%s c= line specified twice at same level, " + "parse failed.", sdp_p->debug_str); + return (SDP_INVALID_TOKEN_ORDERING); + } + + /* Find the connection network type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No connection network type specified for c=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + conn_p->nettype = SDP_NT_UNSUPPORTED; + for (i=0; i < SDP_MAX_NETWORK_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_nettype[i].name, + sdp_nettype[i].strlen) == 0) { + if (sdp_p->conf_p->nettype_supported[i] == TRUE) { + conn_p->nettype = (sdp_nettype_e)i; + } + } + } + if (conn_p->nettype == SDP_NT_UNSUPPORTED) { + sdp_parse_error(sdp_p, + "%s Warning: Connection network type unsupported " + "(%s) for c=.", sdp_p->debug_str, tmp); + } + + /* Find the connection address type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + if (conn_p->nettype == SDP_NT_ATM) { + /* If the nettype is ATM, addr type and addr are not reqd */ + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse connection: network %s", sdp_p->debug_str, + sdp_get_network_name(conn_p->nettype)); + } + return (SDP_SUCCESS); + } else { + sdp_parse_error(sdp_p, + "%s No connection address type specified for " + "c=.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + } + conn_p->addrtype = SDP_AT_UNSUPPORTED; + for (i=0; i < SDP_MAX_ADDR_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_addrtype[i].name, + sdp_addrtype[i].strlen) == 0) { + if (sdp_p->conf_p->addrtype_supported[i] == TRUE) { + conn_p->addrtype = (sdp_addrtype_e)i; + } + } + } + if (conn_p->addrtype == SDP_AT_UNSUPPORTED) { + sdp_parse_error(sdp_p, + "%s Warning: Connection address type unsupported " + "(%s) for c=.", sdp_p->debug_str, tmp); + } + + /* Find the connection address. */ + ptr = sdp_getnextstrtok(ptr, conn_p->conn_addr, sizeof(conn_p->conn_addr), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No connection address specified for c=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + /* We currently only support addrs containing '/'s for EPN addrs. + * For other addrs this would indicate multicast addrs. */ + /* Multicast host group addresses are defined to be the IP addresses + * whose high-order four bits are 1110, giving an address range from + * 224.0.0.0 through 239.255.255.255 + */ + /* multicast addr check */ + sstrncpy (mcast_str, conn_p->conn_addr, MCAST_STRING_LEN); + + if (conn_p->addrtype == SDP_AT_IP4) { + errno = 0; + strtoul_result = strtoul(mcast_str, &strtoul_end, 10); + + if (errno || mcast_str == strtoul_end || strtoul_result > 255) { + sdp_parse_error(sdp_p, + "%s Error parsing address %s for mcast.", + sdp_p->debug_str, mcast_str); + sdp_p->conf_p->num_invalid_param++; + return SDP_INVALID_PARAMETER; + } + + + mcast_bits = (int) strtoul_result; + if ((mcast_bits >= SDP_MIN_MCAST_ADDR_HI_BIT_VAL ) && + (mcast_bits <= SDP_MAX_MCAST_ADDR_HI_BIT_VAL)) { + SDP_PRINT("%s Parsed to be a multicast address with mcast bits %d", + sdp_p->debug_str, mcast_bits); + conn_p->is_multicast = TRUE; + } + } + + if (conn_p->addrtype != SDP_AT_EPN) { + slash_ptr = sdp_findchar(conn_p->conn_addr, "/"); + if (slash_ptr[0] != '\0') { + /* this used to rely on the above busted multicast check */ + SDP_PRINT("%s An address with slash %s", + sdp_p->debug_str, conn_p->conn_addr); + conn_p->conn_addr[slash_ptr - conn_p->conn_addr] = '\0'; + slash_ptr++; + slash_ptr = sdp_getnextstrtok(slash_ptr, tmp, sizeof(tmp), + "/", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No ttl value specified for this multicast addr with a slash", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + errno = 0; + strtoul_result = strtoul(tmp, &strtoul_end, 10); + + if (errno || tmp == strtoul_end || conn_p->ttl > SDP_MAX_TTL_VALUE) { + sdp_parse_error(sdp_p, + "%s Invalid TTL: Value must be in the range 0-255 ", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + conn_p->ttl = (int) strtoul_result; + + /* search for num of addresses */ + /*sa_ignore NO_NULL_CHK + {ptr is valid since the pointer was checked earlier and the + function would have exited if NULL.}*/ + slash_ptr = sdp_findchar(slash_ptr, "/"); + if (slash_ptr != NULL && + slash_ptr[0] != '\0') { + SDP_PRINT("%s Found a num addr field for multicast addr %s ", + sdp_p->debug_str,slash_ptr); + slash_ptr++; + + errno = 0; + strtoul_result = strtoul(slash_ptr, &strtoul_end, 10); + + if (errno || slash_ptr == strtoul_end || strtoul_result == 0) { + sdp_parse_error(sdp_p, + "%s Invalid Num of addresses: Value must be > 0 ", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return SDP_INVALID_PARAMETER; + } + + conn_p->num_of_addresses = (int) strtoul_result; + } + } + } + + /* See if the address is the choose param and if it's allowed. */ + if ((sdp_p->conf_p->allow_choose[SDP_CHOOSE_CONN_ADDR] == FALSE) && + (strcmp(conn_p->conn_addr, "$") == 0)) { + sdp_parse_error(sdp_p, + "%s Warning: Choose parameter for connection " + "address specified but not allowed.", sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse connection: network %s, address type %s, " + "address %s ttl= %u num of addresses = %u", + sdp_p->debug_str, + sdp_get_network_name(conn_p->nettype), + sdp_get_address_name(conn_p->addrtype), + conn_p->conn_addr, (unsigned)conn_p->ttl, (unsigned)conn_p->num_of_addresses); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_connection (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + sdp_mca_t *mca_p; + sdp_conn_t *conn_p; + + if (level == SDP_SESSION_LEVEL) { + conn_p = &(sdp_p->default_conn); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + conn_p = &(mca_p->conn); + } + + if((conn_p->nettype == SDP_NT_ATM ) && + (conn_p->addrtype == SDP_AT_INVALID)) { + /*allow c= line to be built without address type and address fields + * This is a special case for ATM PVC*/ + flex_string_sprintf(fs, "c=%s\r\n", + sdp_get_network_name(conn_p->nettype)); + return SDP_SUCCESS; + } + if ((conn_p->nettype >= SDP_MAX_NETWORK_TYPES) || + (conn_p->addrtype >= SDP_MAX_ADDR_TYPES) || + (conn_p->conn_addr[0] == '\0')) { + /* Connection info isn't set - don't need to build the token. */ + return (SDP_SUCCESS); + } + + if (conn_p->is_multicast) { + if (conn_p->num_of_addresses > 1) { + flex_string_sprintf(fs, "c=%s %s %s/%u/%u\r\n", + sdp_get_network_name(conn_p->nettype), + sdp_get_address_name(conn_p->addrtype), + conn_p->conn_addr, + (unsigned)conn_p->ttl, + (unsigned)conn_p->num_of_addresses); + } else { + flex_string_sprintf(fs, "c=%s %s %s/%u\r\n", + sdp_get_network_name(conn_p->nettype), + sdp_get_address_name(conn_p->addrtype), + conn_p->conn_addr, + (unsigned)conn_p->ttl); + } + } else { + + flex_string_sprintf(fs, "c=%s %s %s\r\n", + sdp_get_network_name(conn_p->nettype), + sdp_get_address_name(conn_p->addrtype), + conn_p->conn_addr); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built c= connection line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +/* + * sdp_parse_bandwidth + * + * This function parses a bandwidth field. The parsing is done in accordance + * to the following ABNF: + * + * bandwidth-fields = *("b=" bwtype ":" bandwidth CRLF) + * bwtype = 1*(alpha-numeric) + * bandwidth = 1*(DIGIT) + * + * It currently supports three types of valid bwtypes - AS, CT and TIAS + */ +sdp_result_e sdp_parse_bandwidth (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + int i; + sdp_mca_t *mca_p; + sdp_bw_t *bw_p; + sdp_bw_data_t *bw_data_p; + sdp_bw_data_t *new_bw_data_p; + sdp_result_e result; + char tmp[SDP_MAX_STRING_LEN]; + sdp_bw_modifier_e bw_modifier = SDP_BW_MODIFIER_UNSUPPORTED; + int bw_val = 0; + + if (level == SDP_SESSION_LEVEL) { + bw_p = &(sdp_p->bw); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + bw_p = &(mca_p->bw); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse bandwidth line", sdp_p->debug_str); + } + + /* Find the bw type (AS, CT or TIAS) */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), ":", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No bandwidth type specified for b= ", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + for (i=0; i < SDP_MAX_BW_MODIFIER_VAL; i++) { + if (cpr_strncasecmp(tmp, sdp_bw_modifier_val[i].name, + sdp_bw_modifier_val[i].strlen) == 0) { + bw_modifier = (sdp_bw_modifier_e)i; + break; + } + } + + if (bw_modifier == SDP_BW_MODIFIER_UNSUPPORTED) { + /* We don't understand this parameter, so according to RFC4566 sec 5.8 + * ignore it. */ + return (SDP_SUCCESS); + } + + /* Find the BW type value */ + /*sa_ignore NO_NULL_CHK + {ptr is valid since the pointer was checked earlier and the + function would have exited if NULL.}*/ + if (*ptr == ':') { + ptr++; + bw_val = sdp_getnextnumtok(ptr, &ptr, " \t", &result); + if ((result != SDP_SUCCESS)) { + sdp_parse_error(sdp_p, + "%s Error: No BW Value specified ", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + } + + /* + * Allocate a new sdp_bw_data_t instance and set it's values from the + * input parameters. + */ + new_bw_data_p = (sdp_bw_data_t*)SDP_MALLOC(sizeof(sdp_bw_data_t)); + if (new_bw_data_p == NULL) { + sdp_p->conf_p->num_invalid_param++; + return (SDP_NO_RESOURCE); + } + new_bw_data_p->next_p = NULL; + new_bw_data_p->bw_modifier = bw_modifier; + new_bw_data_p->bw_val = bw_val; + + /* + * Enqueue the sdp_bw_data_t instance at the end of the list of + * sdp_bw_data_t instances. + */ + if (bw_p->bw_data_list == NULL) { + bw_p->bw_data_list = new_bw_data_p; + } else { + for (bw_data_p = bw_p->bw_data_list; + bw_data_p->next_p != NULL; + bw_data_p = bw_data_p->next_p) { + ; // Empty For + } + bw_data_p->next_p = new_bw_data_p; + } + bw_p->bw_data_count++; + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parsed bw type %s, value %d", sdp_p->debug_str, + sdp_get_bw_modifier_name(new_bw_data_p->bw_modifier), + new_bw_data_p->bw_val); + } + + return (SDP_SUCCESS); +} + +/* + * sdp_build_bandwidth + * + * Builds *all* the bandwith lines for the specified level. + */ +sdp_result_e sdp_build_bandwidth (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + sdp_bw_t *bw_p; + sdp_bw_data_t *bw_data_p; + sdp_mca_t *mca_p; + + if (level == SDP_SESSION_LEVEL) { + bw_p = &(sdp_p->bw); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + bw_p = &(mca_p->bw); + } + + bw_data_p = bw_p->bw_data_list; + while (bw_data_p) { + flex_string_sprintf(fs, "b=%s:%d\r\n", + sdp_get_bw_modifier_name(bw_data_p->bw_modifier), + bw_data_p->bw_val); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built b=%s:%d bandwidth line", sdp_p->debug_str, + sdp_get_bw_modifier_name(bw_data_p->bw_modifier), + bw_data_p->bw_val); + } + + bw_data_p = bw_data_p->next_p; + } + + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_timespec (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *tmpptr; + sdp_result_e result; + sdp_timespec_t *timespec_p; + sdp_timespec_t *next_timespec_p; + + timespec_p = (sdp_timespec_t *)SDP_MALLOC(sizeof(sdp_timespec_t)); + if (timespec_p == NULL) { + sdp_p->conf_p->num_no_resource++; + return (SDP_NO_RESOURCE); + } + + /* Validate start and stop times. */ + ptr = sdp_getnextstrtok(ptr, timespec_p->start_time, sizeof(timespec_p->start_time), " \t", &result); + if (result == SDP_SUCCESS) { + /* Make sure the start_time is numeric, even though we store it as + * a string. + */ + (void)sdp_getnextnumtok(timespec_p->start_time, + (const char **)&tmpptr, " \t", &result); + } + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s Invalid timespec start time specified.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + SDP_FREE(timespec_p); + return (SDP_INVALID_PARAMETER); + } + + ptr = sdp_getnextstrtok(ptr, timespec_p->stop_time, sizeof(timespec_p->stop_time), " \t", &result); + if (result == SDP_SUCCESS) { + /* Make sure the start_time is numeric, even though we store it as + * a string. + */ + (void)sdp_getnextnumtok(timespec_p->stop_time, + (const char **)&tmpptr, " \t", &result); + } + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s Invalid timespec stop time specified.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + SDP_FREE(timespec_p); + return (SDP_INVALID_PARAMETER); + } + + /* Link the new timespec in to the end of the list. */ + if (sdp_p->timespec_p == NULL) { + sdp_p->timespec_p = timespec_p; + } else { + next_timespec_p = sdp_p->timespec_p; + while (next_timespec_p->next_p != NULL) { + next_timespec_p = next_timespec_p->next_p; + } + next_timespec_p->next_p = timespec_p; + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parsed timespec line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_timespec (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + if ((sdp_p->timespec_p == NULL) || + (sdp_p->timespec_p->start_time[0] == '\0') || + (sdp_p->timespec_p->stop_time[0] == '\0')) { + if (sdp_p->conf_p->timespec_reqd == TRUE) { + SDPLogError(logTag, "%s Invalid params for t= time spec line, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } else { + /* t= line not required. */ + return (SDP_SUCCESS); + } + } + + /* Note: We only support one t= line currently. */ + flex_string_sprintf(fs, "t=%s %s\r\n", sdp_p->timespec_p->start_time, + sdp_p->timespec_p->stop_time); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built t= timespec line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_repeat_time (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No repeat time parameters " + "specified.", sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parsed repeat time line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_repeat_time (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build repeat time line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_timezone_adj (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + char *endptr; + + endptr = sdp_findchar(ptr, "\n"); + if (ptr == endptr) { + sdp_parse_error(sdp_p, + "%s Warning: No timezone parameters specified.", + sdp_p->debug_str); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse timezone adustment line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_timezone_adj (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + /* Build timezone adjustment line not supported. */ + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_encryption (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + int i; + sdp_result_e result; + sdp_encryptspec_t *encrypt_p; + sdp_mca_t *mca_p; + char tmp[SDP_MAX_STRING_LEN]; + + if (level == SDP_SESSION_LEVEL) { + encrypt_p = &(sdp_p->encrypt); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + encrypt_p = &(mca_p->encrypt); + } + encrypt_p->encrypt_key[0] = '\0'; + + /* Find the encryption type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), ":", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No encryption type specified for k=.", + sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + encrypt_p->encrypt_type = SDP_ENCRYPT_UNSUPPORTED; + for (i=0; i < SDP_MAX_ENCRYPT_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_encrypt[i].name, + sdp_encrypt[i].strlen) == 0) { + encrypt_p->encrypt_type = (sdp_encrypt_type_e)i; + break; + } + } + if (encrypt_p->encrypt_type == SDP_ENCRYPT_UNSUPPORTED) { + sdp_parse_error(sdp_p, + "%s Warning: Encryption type unsupported (%s).", + sdp_p->debug_str, tmp); + } + + /* Find the encryption key. */ + encrypt_p->encrypt_key[0] = '\0'; + /*sa_ignore NO_NULL_CHK + {ptr is valid since the pointer was checked earlier and the + function would have exited if NULL.}*/ + if (*ptr == ':') + ptr++; + if (encrypt_p->encrypt_type != SDP_ENCRYPT_PROMPT) { + ptr = sdp_getnextstrtok(ptr, encrypt_p->encrypt_key, sizeof(encrypt_p->encrypt_key), " \t", &result); + if ((result != SDP_SUCCESS) && + ((encrypt_p->encrypt_type == SDP_ENCRYPT_CLEAR) || + (encrypt_p->encrypt_type == SDP_ENCRYPT_BASE64) || + (encrypt_p->encrypt_type == SDP_ENCRYPT_URI))) { + sdp_parse_error(sdp_p, + "%s Warning: No encryption key specified " + "as required.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Parse encryption type %s, key %s", sdp_p->debug_str, + sdp_get_encrypt_name(encrypt_p->encrypt_type), + encrypt_p->encrypt_key); + } + return (SDP_SUCCESS); +} + +/* If the encryption info is valid, we build it. Else skip it. */ +sdp_result_e sdp_build_encryption (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + sdp_encryptspec_t *encrypt_p; + sdp_mca_t *mca_p; + + if (level == SDP_SESSION_LEVEL) { + encrypt_p = &(sdp_p->encrypt); + } else { + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + encrypt_p = &(mca_p->encrypt); + } + + if ((encrypt_p->encrypt_type >= SDP_MAX_ENCRYPT_TYPES) || + ((encrypt_p->encrypt_type != SDP_ENCRYPT_PROMPT) && + (encrypt_p->encrypt_key[0] == '\0'))) { + /* Encryption info isn't set - don't need to build the token. */ + return (SDP_SUCCESS); + } + + flex_string_sprintf(fs, "k=%s", + sdp_get_encrypt_name(encrypt_p->encrypt_type)); + + if (encrypt_p->encrypt_type == SDP_ENCRYPT_PROMPT) { + /* There is no key to print. */ + flex_string_sprintf(fs, "\r\n"); + } else { + flex_string_sprintf(fs, ":%s\r\n", encrypt_p->encrypt_key); + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built k= encryption line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_parse_media (sdp_t *sdp_p, uint16_t level, const char *ptr) +{ + uint16_t i; + uint16_t num_port_params=0; + int32_t num[SDP_MAX_PORT_PARAMS]; + tinybool valid_param = FALSE; + sdp_result_e result; + sdp_mca_t *mca_p; + sdp_mca_t *next_mca_p; + char tmp[SDP_MAX_STRING_LEN]; + char port[SDP_MAX_STRING_LEN]; + const char *port_ptr; + int32_t sctp_port; + + /* Allocate resource for new media stream. */ + mca_p = sdp_alloc_mca(sdp_p->parse_line); + if (mca_p == NULL) { + sdp_p->conf_p->num_no_resource++; + return (SDP_NO_RESOURCE); + } + + /* Find the media type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No media type specified, parse failed.", + sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + mca_p->media = SDP_MEDIA_UNSUPPORTED; + for (i=0; i < SDP_MAX_MEDIA_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_media[i].name, + sdp_media[i].strlen) == 0) { + mca_p->media = (sdp_media_e)i; + } + } + if (mca_p->media == SDP_MEDIA_UNSUPPORTED) { + sdp_parse_error(sdp_p, + "%s Warning: Media type unsupported (%s).", + sdp_p->debug_str, tmp); + } + + /* Find the port token parameters, but don't process it until + * we determine the transport protocol as that determines what + * port number formats are valid. + */ + ptr = sdp_getnextstrtok(ptr, port, sizeof(port), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No port specified in m= media line, " + "parse failed.", sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + port_ptr = port; + for (i=0; i < SDP_MAX_PORT_PARAMS; i++) { + num[i] = sdp_getnextnumtok(port_ptr, (const char **)&port_ptr, + "/ \t", &result); + if (result != SDP_SUCCESS) { + break; + } + num_port_params++; + } + + /* Find the transport protocol type. */ + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No transport protocol type specified, " + "parse failed.", sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + mca_p->transport = SDP_TRANSPORT_UNSUPPORTED; + for (i=0; i < SDP_MAX_TRANSPORT_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_transport[i].name, + sdp_transport[i].strlen) == 0) { + mca_p->transport = (sdp_transport_e)i; + break; + } + } + + if (mca_p->transport == SDP_TRANSPORT_UNSUPPORTED) { + /* If we don't recognize or don't support the transport type, + * just store the first num as the port. + */ + mca_p->port = num[0]; + sdp_parse_error(sdp_p, + "%s Warning: Transport protocol type unsupported " + "(%s).", sdp_p->debug_str, tmp); + } + + /* Check for each of the possible port formats according to the + * type of transport protocol specified. + */ + valid_param = FALSE; + switch (num_port_params) { + case 1: + if ((mca_p->transport == SDP_TRANSPORT_RTPAVP) || + (mca_p->transport == SDP_TRANSPORT_RTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_RTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_UDPTLSRTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_UDPTLSRTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSRTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSRTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_UDP) || + (mca_p->transport == SDP_TRANSPORT_TCP) || + (mca_p->transport == SDP_TRANSPORT_UDPTL) || + (mca_p->transport == SDP_TRANSPORT_UDPSPRT) || + (mca_p->transport == SDP_TRANSPORT_LOCAL) || + (mca_p->transport == SDP_TRANSPORT_DTLSSCTP) || + (mca_p->transport == SDP_TRANSPORT_UDPDTLSSCTP) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSSCTP)) { + /* Port format is simply <port>. Make sure that either + * the choose param is allowed or that the choose value + * wasn't specified. + */ + if ((sdp_p->conf_p->allow_choose[SDP_CHOOSE_PORTNUM]) || + (num[0] != SDP_CHOOSE_PARAM)) { + mca_p->port = num[0]; + mca_p->port_format = SDP_PORT_NUM_ONLY; + valid_param = TRUE; + } + } else if (mca_p->transport == SDP_TRANSPORT_AAL1AVP) { + /* Port format is simply <vcci>, choose param is not allowed. + */ + if (num[0] != SDP_CHOOSE_PARAM) { + mca_p->vcci = num[0]; + mca_p->port_format = SDP_PORT_VCCI; + valid_param = TRUE; + } + } else if ((mca_p->transport == SDP_TRANSPORT_AAL2_ITU) || + (mca_p->transport == SDP_TRANSPORT_AAL2_ATMF) || + (mca_p->transport == SDP_TRANSPORT_AAL2_CUSTOM)) { + /* Port format is simply <port>, and choose param is allowed, + * according to AAL2 definitions. + */ + mca_p->port = num[0]; + mca_p->port_format = SDP_PORT_NUM_ONLY; + valid_param = TRUE; + } + break; + case 2: + if ((mca_p->transport == SDP_TRANSPORT_RTPAVP) || + (mca_p->transport == SDP_TRANSPORT_RTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_RTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_UDPTLSRTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_UDPTLSRTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSRTPSAVP) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSRTPSAVPF) || + (mca_p->transport == SDP_TRANSPORT_UDP) || + (mca_p->transport == SDP_TRANSPORT_LOCAL)) { + /* Port format is <port>/<num of ports>. Make sure choose + * params were not specified. + */ + if ((num[0] != SDP_CHOOSE_PARAM) && + (num[1] != SDP_CHOOSE_PARAM)) { + mca_p->port = num[0]; + mca_p->num_ports = num[1]; + mca_p->port_format = SDP_PORT_NUM_COUNT; + valid_param = TRUE; + } + } else if (mca_p->transport == SDP_TRANSPORT_UDPTL) { + /* Port format is <port>/<num of ports>. Make sure choose + * params were not specified. For UDPTL, only "1" may + * be specified for number of ports. + */ + if ((num[0] != SDP_CHOOSE_PARAM) && + (num[1] == 1)) { + mca_p->port = num[0]; + mca_p->num_ports = 1; + mca_p->port_format = SDP_PORT_NUM_COUNT; + valid_param = TRUE; + } + } else if (mca_p->transport == SDP_TRANSPORT_CES10) { + /* Port format is <vpi>/<vci>. Make sure choose + * params were not specified. + */ + if ((num[0] != SDP_CHOOSE_PARAM) && + (num[1] != SDP_CHOOSE_PARAM)) { + mca_p->vpi = num[0]; + mca_p->vci = num[1]; + mca_p->port_format = SDP_PORT_VPI_VCI; + valid_param = TRUE; + } + } else if ((mca_p->transport == SDP_TRANSPORT_AAL2_ITU) || + (mca_p->transport == SDP_TRANSPORT_AAL2_ATMF) || + (mca_p->transport == SDP_TRANSPORT_AAL2_CUSTOM)) { + /* Port format is either <vcci>/<cid> or $/$. If one + * param is '$' the other must be also. The choose params + * are allowed by default and don't need to be allowed + * through the appl config. + */ + if (((num[0] != SDP_CHOOSE_PARAM) && + (num[1] != SDP_CHOOSE_PARAM)) || + ((num[0] == SDP_CHOOSE_PARAM) && + (num[1] == SDP_CHOOSE_PARAM))) { + mca_p->vcci = num[0]; + mca_p->cid = num[1]; + mca_p->port_format = SDP_PORT_VCCI_CID; + valid_param = TRUE; + } + } + break; + case 3: + if (mca_p->transport == SDP_TRANSPORT_AAL1AVP) { + /* Port format is <port>/<vpi>/<vci>. Make sure choose + * params were not specified. + */ + if ((num[0] != SDP_CHOOSE_PARAM) && + (num[1] != SDP_CHOOSE_PARAM) && + (num[2] != SDP_CHOOSE_PARAM)) { + mca_p->port = num[0]; + mca_p->vpi = num[1]; + mca_p->vci = num[2]; + mca_p->port_format = SDP_PORT_NUM_VPI_VCI; + valid_param = TRUE; + } + } + break; + case 4: + if ((mca_p->transport == SDP_TRANSPORT_AAL2_ITU) || + (mca_p->transport == SDP_TRANSPORT_AAL2_ATMF) || + (mca_p->transport == SDP_TRANSPORT_AAL2_CUSTOM)) { + /* Port format is <port>/<vpi>/<vci>/<cid>. Make sure choose + * params were not specified. + */ + if ((num[0] != SDP_CHOOSE_PARAM) && + (num[1] != SDP_CHOOSE_PARAM) && + (num[2] != SDP_CHOOSE_PARAM) && + (num[3] != SDP_CHOOSE_PARAM)) { + mca_p->port = num[0]; + mca_p->vpi = num[1]; + mca_p->vci = num[2]; + mca_p->cid = num[3]; + mca_p->port_format = SDP_PORT_NUM_VPI_VCI_CID; + valid_param = TRUE; + } + } + break; + } + if (valid_param == FALSE) { + sdp_parse_error(sdp_p, + "%s Invalid port format (%s) specified for transport " + "protocol (%s), parse failed.", sdp_p->debug_str, + port, sdp_get_transport_name(mca_p->transport)); + sdp_p->conf_p->num_invalid_param++; + SDP_FREE(mca_p); + return (SDP_INVALID_PARAMETER); + } + + if ((mca_p->transport == SDP_TRANSPORT_DTLSSCTP) || + (mca_p->transport == SDP_TRANSPORT_UDPDTLSSCTP) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSSCTP)) { + ptr = sdp_getnextstrtok(ptr, port, sizeof(port), " \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No sctp port specified in m= media line, " + "parse failed.", sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + port_ptr = port; + + if ((mca_p->transport == SDP_TRANSPORT_UDPDTLSSCTP) || + (mca_p->transport == SDP_TRANSPORT_TCPDTLSSCTP)) { + if (cpr_strncasecmp(port_ptr, "webrtc-datachannel", + sizeof("webrtc-datachannel")) != 0) { + sdp_parse_error(sdp_p, + "%s No webrtc-datachannel token in m= media line, " + "parse failed.", sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + mca_p->sctp_fmt = SDP_SCTP_MEDIA_FMT_WEBRTC_DATACHANNEL; + } else { + sctp_port = sdp_getnextnumtok(port_ptr, (const char **)&port_ptr, + "/ \t", &result); + if (result != SDP_SUCCESS) { + sdp_parse_error(sdp_p, + "%s No sctp port specified in m= media line, " + "parse failed.", sdp_p->debug_str); + SDP_FREE(mca_p); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + mca_p->sctpport = sctp_port; + } + } else { + /* Transport is a non-AAL2 type and not SCTP. Parse payloads + normally. */ + sdp_parse_payload_types(sdp_p, mca_p, ptr); + } + + + /* Media line params are valid. Add it into the SDP. */ + sdp_p->mca_count++; + if (sdp_p->mca_p == NULL) { + sdp_p->mca_p = mca_p; + } else { + for (next_mca_p = sdp_p->mca_p; next_mca_p->next_p != NULL; + next_mca_p = next_mca_p->next_p) { + ; // Empty For + } + next_mca_p->next_p = mca_p; + } + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + + SDP_PRINT("%s Parsed media type %s, ", sdp_p->debug_str, + sdp_get_media_name(mca_p->media)); + switch (mca_p->port_format) { + case SDP_PORT_NUM_ONLY: + SDP_PRINT("Port num %d, ", mca_p->port); + break; + + case SDP_PORT_NUM_COUNT: + SDP_PRINT("Port num %d, count %d, ", + mca_p->port, mca_p->num_ports); + break; + case SDP_PORT_VPI_VCI: + SDP_PRINT("VPI/VCI %d/%u, ", mca_p->vpi, mca_p->vci); + break; + case SDP_PORT_VCCI: + SDP_PRINT("VCCI %d, ", mca_p->vcci); + break; + case SDP_PORT_NUM_VPI_VCI: + SDP_PRINT("Port %d, VPI/VCI %d/%u, ", mca_p->port, + mca_p->vpi, mca_p->vci); + break; + case SDP_PORT_VCCI_CID: + SDP_PRINT("VCCI %d, CID %d, ", mca_p->vcci, mca_p->cid); + break; + case SDP_PORT_NUM_VPI_VCI_CID: + SDP_PRINT("Port %d, VPI/VCI %d/%u, CID %d, ", mca_p->port, + mca_p->vpi, mca_p->vci, mca_p->cid); + break; + default: + SDP_PRINT("Port format not valid, "); + break; + } + + if ((mca_p->transport >= SDP_TRANSPORT_AAL2_ITU) && + (mca_p->transport <= SDP_TRANSPORT_AAL2_CUSTOM)) { + for (i=0; i < mca_p->media_profiles_p->num_profiles; i++) { + SDP_PRINT("Profile %s, Num payloads %u ", + sdp_get_transport_name(mca_p->media_profiles_p->profile[i]), + (unsigned)mca_p->media_profiles_p->num_payloads[i]); + } + } else { + SDP_PRINT("Transport %s, Num payloads %u", + sdp_get_transport_name(mca_p->transport), + (unsigned)mca_p->num_payloads); + } + } + return (SDP_SUCCESS); +} + +sdp_result_e sdp_build_media (sdp_t *sdp_p, uint16_t level, flex_string *fs) +{ + int i, j; + sdp_mca_t *mca_p; + tinybool invalid_params=FALSE; + sdp_media_profiles_t *profile_p; + + /* Find the right media line */ + mca_p = sdp_find_media_level(sdp_p, level); + if (mca_p == NULL) { + return (SDP_FAILURE); + } + + /* Validate params for this media line */ + if ((mca_p->media >= SDP_MAX_MEDIA_TYPES) || + (mca_p->port_format >= SDP_MAX_PORT_FORMAT_TYPES) || + (mca_p->transport >= SDP_MAX_TRANSPORT_TYPES)) { + invalid_params = TRUE; + } + + if (invalid_params == TRUE) { + SDPLogError(logTag, "%s Invalid params for m= media line, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } + + /* Build the media type */ + flex_string_sprintf(fs, "m=%s ", sdp_get_media_name(mca_p->media)); + + /* Build the port based on the specified port format */ + if (mca_p->port_format == SDP_PORT_NUM_ONLY) { + if (mca_p->port == SDP_CHOOSE_PARAM) { + flex_string_sprintf(fs, "$ "); + } else { + flex_string_sprintf(fs, "%u ", (unsigned)mca_p->port); + } + } else if (mca_p->port_format == SDP_PORT_NUM_COUNT) { + flex_string_sprintf(fs, "%u/%u ", (unsigned)mca_p->port, + (unsigned)mca_p->num_ports); + } else if (mca_p->port_format == SDP_PORT_VPI_VCI) { + flex_string_sprintf(fs, "%u/%u ", + (unsigned)mca_p->vpi, (unsigned)mca_p->vci); + } else if (mca_p->port_format == SDP_PORT_VCCI) { + flex_string_sprintf(fs, "%u ", (unsigned)mca_p->vcci); + } else if (mca_p->port_format == SDP_PORT_NUM_VPI_VCI) { + flex_string_sprintf(fs, "%u/%u/%u ", (unsigned)mca_p->port, + (unsigned)mca_p->vpi, (unsigned)mca_p->vci); + } else if (mca_p->port_format == SDP_PORT_VCCI_CID) { + if ((mca_p->vcci == SDP_CHOOSE_PARAM) && + (mca_p->cid == SDP_CHOOSE_PARAM)) { + flex_string_sprintf(fs, "$/$ "); + } else if ((mca_p->vcci == SDP_CHOOSE_PARAM) || + (mca_p->cid == SDP_CHOOSE_PARAM)) { + /* If one is set but not the other, this is an error. */ + SDPLogError(logTag, "%s Invalid params for m= port parameter, " + "build failed.", sdp_p->debug_str); + sdp_p->conf_p->num_invalid_param++; + return (SDP_INVALID_PARAMETER); + } else { + flex_string_sprintf(fs, "%u/%u ", + (unsigned)mca_p->vcci, (unsigned)mca_p->cid); + } + } else if (mca_p->port_format == SDP_PORT_NUM_VPI_VCI_CID) { + flex_string_sprintf(fs, "%u/%u/%u/%u ", (unsigned)mca_p->port, + (unsigned)mca_p->vpi, (unsigned)mca_p->vci, (unsigned)mca_p->cid); + } + + /* If the media line has AAL2 profiles, build them differently. */ + if ((mca_p->transport == SDP_TRANSPORT_AAL2_ITU) || + (mca_p->transport == SDP_TRANSPORT_AAL2_ATMF) || + (mca_p->transport == SDP_TRANSPORT_AAL2_CUSTOM)) { + profile_p = mca_p->media_profiles_p; + for (i=0; i < profile_p->num_profiles; i++) { + flex_string_sprintf(fs, "%s", + sdp_get_transport_name(profile_p->profile[i])); + + for (j=0; j < profile_p->num_payloads[i]; j++) { + flex_string_sprintf(fs, " %u", + (unsigned)profile_p->payload_type[i][j]); + } + flex_string_sprintf(fs, " "); + } + flex_string_sprintf(fs, "\n"); + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built m= media line", sdp_p->debug_str); + } + return (SDP_SUCCESS); + } + + /* Build the transport name */ + flex_string_sprintf(fs, "%s", + sdp_get_transport_name(mca_p->transport)); + + if(mca_p->transport != SDP_TRANSPORT_DTLSSCTP) { + + /* Build the format lists */ + for (i=0; i < mca_p->num_payloads; i++) { + if (mca_p->payload_indicator[i] == SDP_PAYLOAD_ENUM) { + flex_string_sprintf(fs, " %s", + sdp_get_payload_name((sdp_payload_e)mca_p->payload_type[i])); + } else { + flex_string_sprintf(fs, " %u", (unsigned)mca_p->payload_type[i]); + } + } + } else { + /* Add port to SDP if transport is DTLS/SCTP */ + flex_string_sprintf(fs, " %u", (unsigned)mca_p->sctpport); + } + + flex_string_sprintf(fs, "\r\n"); + + if (sdp_p->debug_flag[SDP_DEBUG_TRACE]) { + SDP_PRINT("%s Built m= media line", sdp_p->debug_str); + } + return (SDP_SUCCESS); +} + + +/* Function: sdp_parse_payload_types + * Description: Parse a list of payload types. The list may be part of + * a media line or part of a capability line. + * Parameters: sdp_ptr The SDP handle returned by sdp_init_description. + * mca_p The mca structure the payload types should be + * added to. + * ptr The pointer to the list of payloads. + * Returns: Nothing. + */ +void sdp_parse_payload_types (sdp_t *sdp_p, sdp_mca_t *mca_p, const char *ptr) +{ + uint16_t i; + uint16_t num_payloads; + sdp_result_e result; + tinybool valid_payload; + char tmp[SDP_MAX_STRING_LEN]; + char *tmp2; + + for (num_payloads = 0; (num_payloads < SDP_MAX_PAYLOAD_TYPES); ) { + ptr = sdp_getnextstrtok(ptr, tmp, sizeof(tmp), " \t", &result); + if (result != SDP_SUCCESS) { + /* If there are no more payload types, we're finished */ + break; + } + mca_p->payload_type[num_payloads] = (uint16_t)sdp_getnextnumtok(tmp, + (const char **)&tmp2, + " \t", &result); + if (result == SDP_SUCCESS) { + if ((mca_p->media == SDP_MEDIA_IMAGE) && + (mca_p->transport == SDP_TRANSPORT_UDPTL)) { + sdp_parse_error(sdp_p, + "%s Warning: Numeric payload type not " + "valid for media %s with transport %s.", + sdp_p->debug_str, + sdp_get_media_name(mca_p->media), + sdp_get_transport_name(mca_p->transport)); + } else { + mca_p->payload_indicator[num_payloads] = SDP_PAYLOAD_NUMERIC; + mca_p->num_payloads++; + num_payloads++; + } + continue; + } + + valid_payload = FALSE; + for (i=0; i < SDP_MAX_STRING_PAYLOAD_TYPES; i++) { + if (cpr_strncasecmp(tmp, sdp_payload[i].name, + sdp_payload[i].strlen) == 0) { + valid_payload = TRUE; + break; + } + } + if (valid_payload == TRUE) { + /* We recognized the payload type. Make sure it + * is valid for this media line. */ + valid_payload = FALSE; + if ((mca_p->media == SDP_MEDIA_IMAGE) && + (mca_p->transport == SDP_TRANSPORT_UDPTL) && + (i == SDP_PAYLOAD_T38)) { + valid_payload = TRUE; + } else if ((mca_p->media == SDP_MEDIA_APPLICATION) && + (mca_p->transport == SDP_TRANSPORT_UDP) && + (i == SDP_PAYLOAD_XTMR)) { + valid_payload = TRUE; + } else if ((mca_p->media == SDP_MEDIA_APPLICATION) && + (mca_p->transport == SDP_TRANSPORT_TCP) && + (i == SDP_PAYLOAD_T120)) { + valid_payload = TRUE; + } + + if (valid_payload == TRUE) { + mca_p->payload_indicator[num_payloads] = SDP_PAYLOAD_ENUM; + mca_p->payload_type[num_payloads] = i; + mca_p->num_payloads++; + num_payloads++; + } else { + sdp_parse_error(sdp_p, + "%s Warning: Payload type %s not valid for " + "media %s with transport %s.", + sdp_p->debug_str, + sdp_get_payload_name((sdp_payload_e)i), + sdp_get_media_name(mca_p->media), + sdp_get_transport_name(mca_p->transport)); + } + } else { + /* Payload type wasn't recognized. */ + sdp_parse_error(sdp_p, + "%s Warning: Payload type " + "unsupported (%s).", sdp_p->debug_str, tmp); + } + } + if (mca_p->num_payloads == 0) { + sdp_parse_error(sdp_p, + "%s Warning: No payload types specified.", + sdp_p->debug_str); + } +} + |