#include #include #include #include struct sdp_test_data { const char *sdp_input; const char *expect_sdp_str; }; static void dump_sdp(const char *str, const char *prefix) { while (str && *str) { const char *line_end = sdp_msg_line_end(str); while (*line_end == '\r' || *line_end == '\n') line_end++; printf("%s%s\n", prefix, osmo_escape_str(str, line_end - str)); str = line_end; } } struct sdp_test_data sdp_tests[] = { { "v=0\r\n" "o=- 5628250 5628250 IN IP4 192.168.11.121\r\n" "s=-\r\n" "c=IN IP4 192.168.11.121\r\n" "t=0 0\r\n" "m=audio 10020 RTP/AVP 18 0 2 4 8 96 97 98 100 101\r\n" "a=rtpmap:18 G729/8000\r\n" "a=rtpmap:0 PCMU/8000\r\n" "a=rtpmap:2 G726-32/8000\r\n" "a=rtpmap:4 G723/8000\r\n" "a=rtpmap:8 PCMA/8000\r\n" "a=rtpmap:96 G726-40/8000\r\n" "a=rtpmap:97 G726-24/8000\r\n" "a=rtpmap:98 G726-16/8000\r\n" "a=rtpmap:100 NSE/8000\r\n" "a=fmtp:100 192-193\r\n" "a=rtpmap:101 telephone-event/8000\r\n" "a=fmtp:101 0-15\r\n" "a=ptime:20\r\n" "a=sendrecv\r\n" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 192.168.11.121\r\n" "s=GSM Call\r\n" "c=IN IP4 192.168.11.121\r\n" "t=0 0\r\n" "m=audio 10020 RTP/AVP 18 0 2 4 8 96 97 98 100 101\r\n" "a=rtpmap:18 G729/8000\r\n" "a=rtpmap:0 PCMU/8000\r\n" "a=rtpmap:2 G726-32/8000\r\n" "a=rtpmap:4 G723/8000\r\n" "a=rtpmap:8 PCMA/8000\r\n" "a=rtpmap:96 G726-40/8000\r\n" "a=rtpmap:97 G726-24/8000\r\n" "a=rtpmap:98 G726-16/8000\r\n" "a=rtpmap:100 NSE/8000\r\n" "a=fmtp:100 192-193\r\n" "a=rtpmap:101 telephone-event/8000\r\n" "a=fmtp:101 0-15\r\n" "a=ptime:20\r\n" "a=sendrecv\r\n" , }, { "v=0\r\n" "o=FooBar 1565090289 1565090290 IN IP4 192.168.11.151\r\n" "s=FooBar\r\n" "c=IN IP4 192.168.11.151\r\n" "t=0 0\r\n" "m=audio 16398 RTP/AVP 98\r\n" "a=rtpmap:98 AMR/8000\r\n" "a=fmtp:98 octet-align=1; mode-set=4\r\n" "a=ptime:20\r\n" "a=rtcp:16399 IN IP4 192.168.11.151\r\n" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 192.168.11.151\r\n" "s=GSM Call\r\n" "c=IN IP4 192.168.11.151\r\n" "t=0 0\r\n" "m=audio 16398 RTP/AVP 98\r\n" "a=rtpmap:98 AMR/8000\r\n" "a=fmtp:98 octet-align=1; mode-set=4\r\n" "a=ptime:20\r\n" , }, { "v=0\r\n" "o=FooBar 1565090289 1565090290 IN IP4 192.168.11.151\r\n" "s=FooBar\r\n" "c=IN IP4 192.168.11.140\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 18 0 4 8 101\r\n" "a=rtpmap:18 G729/8000\r\n" "a=rtpmap:0 PCMU/8000\r\n" "a=rtpmap:4 G723/8000\r\n" "a=rtpmap:8 PCMA/8000\r\n" "a=rtpmap:101 telephone-event/8000\r\n" "a=fmtp:101 0-15\r\n" "a=sendrecv\r\n" "a=rtcp:30437\r\n" "a=ptime:20\r\n" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 192.168.11.140\r\n" /* <- NOTE: loses the 'o=' address, uses only 'c=' */ "s=GSM Call\r\n" "c=IN IP4 192.168.11.140\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 18 0 4 8 101\r\n" "a=rtpmap:18 G729/8000\r\n" "a=rtpmap:0 PCMU/8000\r\n" "a=rtpmap:4 G723/8000\r\n" "a=rtpmap:8 PCMA/8000\r\n" "a=rtpmap:101 telephone-event/8000\r\n" "a=fmtp:101 0-15\r\n" "a=ptime:20\r\n" "a=sendrecv\r\n" , }, }; void test_parse_and_compose() { int i; bool ok = true; printf("\n\n%s\n", __func__); for (i = 0; i < ARRAY_SIZE(sdp_tests); i++) { struct sdp_test_data *t = &sdp_tests[i]; struct sdp_msg sdp = {}; char str[1024]; printf("\n[%d]\n", i); dump_sdp(t->sdp_input, "sdp input: "); OSMO_ASSERT(sdp_msg_from_sdp_str(&sdp, t->sdp_input) == 0); sdp_msg_to_sdp_str_buf(str, sizeof(str), &sdp); dump_sdp(str, "sdp_msg_to_sdp_str_buf: "); if (strcmp(str, t->expect_sdp_str)) { int j; ok = false; printf("ERROR:\n"); dump_sdp(t->expect_sdp_str, "expect_sdp_str: "); for (j = 0; t->expect_sdp_str[j]; j++) { if (t->expect_sdp_str[j] != str[j]) { printf("ERROR at position %d, at:\n", j); dump_sdp(str + j, " mismatch: "); break; } } } else printf("[%d] ok\n", i); } OSMO_ASSERT(ok); } struct sdp_intersect_test_data { const char *descr; const char *sdp_a; const char *sdp_b; const char *expect_intersection; }; #define SDP_1 \ "v=0\r\n" \ "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" \ "s=GSM Call\r\n" \ "c=IN IP4 23.42.23.42\r\n" \ "t=0 0\r\n" \ "m=audio 30436 RTP/AVP 112 3 111 110\r\n" \ "a=rtpmap:112 AMR/8000\r\n" \ "a=fmtp:112 octet-align=1\r\n" \ "a=rtpmap:3 GSM/8000\r\n" \ "a=rtpmap:111 GSM-HR-08/8000\r\n" \ "a=rtpmap:110 GSM-EFR/8000\r\n" \ "a=ptime:20\r\n" #define SDP_2 \ "v=0\r\n" \ "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" \ "s=GSM Call\r\n" \ "c=IN IP4 23.42.23.42\r\n" \ "t=0 0\r\n" \ "m=audio 30436 RTP/AVP 112 110\r\n" \ "a=rtpmap:112 AMR/8000\r\n" \ "a=fmtp:112 octet-align=1\r\n" \ "a=rtpmap:110 GSM-EFR/8000\r\n" \ "a=ptime:20\r\n" #define SDP_3 \ "v=0\r\n" \ "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" \ "s=GSM Call\r\n" \ "c=IN IP4 23.42.23.42\r\n" \ "t=0 0\r\n" \ "m=audio 30436 RTP/AVP 3 111\r\n" \ "a=rtpmap:3 GSM/8000\r\n" \ "a=rtpmap:111 GSM-HR-08/8000\r\n" \ "a=ptime:20\r\n" struct sdp_intersect_test_data sdp_intersect_tests[] = { { "identical codecs lead to no change" , SDP_1 , "c=IN IP4 5.6.7.8\r\n" \ "m=audio 12345 RTP/AVP 112 3 111 110\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" , SDP_1 }, { "identical codecs in different order also lead to no change" , SDP_1 , "c=IN IP4 5.6.7.8\r\n" \ "m=audio 12345 RTP/AVP 3 110 111 112\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" , SDP_1 }, { "identical codecs with mismatching payload type numbers also lead to no change" , SDP_1 , "c=IN IP4 5.6.7.8\r\n" \ "m=audio 12345 RTP/AVP 96 97 98 99\r\n" "a=rtpmap:96 GSM/8000\r\n" "a=rtpmap:97 GSM-EFR/8000\r\n" "a=rtpmap:98 GSM-HR-08/8000\r\n" "a=rtpmap:99 AMR/8000\r\n" "a=fmtp:99 octet-align=1\r\n" , SDP_1 }, { "identical codecs plus some extra codecs also lead to no change" , SDP_1 , "c=IN IP4 5.6.7.8\r\n" \ "m=audio 12345 RTP/AVP 8 0 96 97 98 99\r\n" "a=rtpmap:8 PCMA/8000\r\n" "a=rtpmap:0 PCMU/8000\r\n" "a=rtpmap:96 GSM/8000\r\n" "a=rtpmap:97 GSM-EFR/8000\r\n" "a=rtpmap:98 GSM-HR-08/8000\r\n" "a=rtpmap:99 AMR/8000\r\n" "a=fmtp:99 octet-align=1\r\n" , SDP_1 }, { "some codecs removed", SDP_1, SDP_2, SDP_2, }, { "other codecs removed", SDP_1, SDP_3, SDP_3, }, { "all codecs removed", SDP_1 , "s=empty" , "v=0\r\n" \ "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" \ "s=GSM Call\r\n" \ "c=IN IP4 23.42.23.42\r\n" \ "t=0 0\r\n" \ "m=audio 30436 RTP/AVP\r\n" \ "a=ptime:20\r\n" }, { "some real world test case" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 0.0.0.0\r\n" "s=GSM Call\r\n" "c=IN IP4 0.0.0.0\r\n" "t=0 0\r\n" "m=audio 0 RTP/AVP 112 113 110 3 111\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1;mode-set=0,1,2,3\r\n" "a=rtpmap:113 AMR-WB/8000\r\n" "a=fmtp:113 octet-align=1\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=ptime:20\r\n" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 0.0.0.0\r\n" "s=GSM Call\r\n" "c=IN IP4 0.0.0.0\r\n" "t=0 0\r\n" "m=audio 0 RTP/AVP 112 113 110 3 111\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1;mode-set=0,1,2,3\r\n" "a=rtpmap:113 AMR-WB/8000\r\n" "a=fmtp:113 octet-align=1\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=ptime:20\r\n" , "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 0.0.0.0\r\n" "s=GSM Call\r\n" "c=IN IP4 0.0.0.0\r\n" "t=0 0\r\n" "m=audio 0 RTP/AVP 112 113 110 3 111\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1;mode-set=0,1,2,3\r\n" "a=rtpmap:113 AMR-WB/8000\r\n" "a=fmtp:113 octet-align=1\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=ptime:20\r\n" } }; const char *sdp_msg_logstr(const struct sdp_msg *sdp) { static char buf[1024]; sdp_msg_to_sdp_str_buf(buf, sizeof(buf), sdp); return buf; } static void test_intersect() { int i; bool ok = true; int rc; printf("\n\n%s\n", __func__); for (i = 0; i < ARRAY_SIZE(sdp_intersect_tests); i++) { struct sdp_intersect_test_data *t = &sdp_intersect_tests[i]; struct sdp_msg sdp_a = {}; struct sdp_msg sdp_b = {}; char str[1024]; printf("\n[%d] %s\n", i, t->descr); dump_sdp(t->sdp_a, "SDP A: "); dump_sdp(t->sdp_b, " SDP B: "); rc = sdp_msg_from_sdp_str(&sdp_a, t->sdp_a); if (rc) { printf("ERROR parsing SDP A: %d\n", rc); break; } dump_sdp(sdp_msg_logstr(&sdp_a), "parsed SDP A: "); rc = sdp_msg_from_sdp_str(&sdp_b, t->sdp_b); if (rc) { printf("ERROR parsing SDP A: %d\n", rc); break; } dump_sdp(sdp_msg_logstr(&sdp_b), "parsed SDP B: "); sdp_audio_codecs_intersection(&sdp_a.audio_codecs, &sdp_b.audio_codecs, false); sdp_msg_to_sdp_str_buf(str, sizeof(str), &sdp_a); dump_sdp(str, "sdp_msg_intersection(a,b): "); if (strcmp(str, t->expect_intersection)) { int j; ok = false; printf("ERROR:\n"); dump_sdp(t->expect_intersection, "expect_intersection: "); for (j = 0; t->expect_intersection[j]; j++) { if (t->expect_intersection[j] != str[j]) { printf("ERROR at position %d, at:\n", j); dump_sdp(str + j, " mismatch: "); break; } } } else printf("[%d] ok\n", i); } OSMO_ASSERT(ok); } struct sdp_select_test_data { const char *sdp; unsigned int select_payload_type; const char *expect_sdp; }; struct sdp_select_test_data sdp_select_tests[] = { { "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 112 3 111 110\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" , 112, NULL }, { "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 112 3 111 110\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" , 3, "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 3 112 111 110\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" }, { "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 112 3 111 110\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" , 111, "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 111 112 3 110\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" }, { "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 112 3 111 110\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=ptime:20\r\n" , 110, "v=0\r\n" "o=OsmoMSC 0 0 IN IP4 23.42.23.42\r\n" "s=GSM Call\r\n" "c=IN IP4 23.42.23.42\r\n" "t=0 0\r\n" "m=audio 30436 RTP/AVP 110 112 3 111\r\n" "a=rtpmap:110 GSM-EFR/8000\r\n" "a=rtpmap:112 AMR/8000\r\n" "a=fmtp:112 octet-align=1\r\n" "a=rtpmap:3 GSM/8000\r\n" "a=rtpmap:111 GSM-HR-08/8000\r\n" "a=ptime:20\r\n" }, }; static void test_select() { int i; bool ok = true; int rc; printf("\n\n%s\n", __func__); for (i = 0; i < ARRAY_SIZE(sdp_select_tests); i++) { struct sdp_select_test_data *t = &sdp_select_tests[i]; struct sdp_msg sdp = {}; struct sdp_audio_codec *codec; char buf[1024]; const char *expect_sdp; printf("\n[%d]\n", i); rc = sdp_msg_from_sdp_str(&sdp, t->sdp); if (rc) { printf("ERROR parsing SDP: %d\n", rc); break; } printf("SDP: %s\n", sdp_audio_codecs_to_str(&sdp.audio_codecs)); codec = sdp_audio_codecs_by_payload_type(&sdp.audio_codecs, t->select_payload_type, false); OSMO_ASSERT(codec); printf("Select: %s\n", sdp_audio_codec_to_str(codec)); sdp_audio_codecs_select(&sdp.audio_codecs, codec); printf("SDP: %s\n", sdp_audio_codecs_to_str(&sdp.audio_codecs)); sdp_msg_to_sdp_str_buf(buf, sizeof(buf), &sdp); expect_sdp = t->expect_sdp ? : t->sdp; if (strcmp(buf, expect_sdp)) { int j; ok = false; printf("ERROR:\n"); dump_sdp(buf, "selection result: "); dump_sdp(expect_sdp, "expect result: "); for (j = 0; expect_sdp[j]; j++) { if (expect_sdp[j] != buf[j]) { printf("ERROR at position %d, at:\n", j); dump_sdp(buf + j, " mismatch: "); break; } } } else printf("[%d] ok\n", i); } OSMO_ASSERT(ok); } int main(void) { test_parse_and_compose(); test_intersect(); test_select(); return 0; }