//based on libRTMP function void rtmp_supplement::dumpAMF(AMFObject *obj) { int i; const char opt[] = "NBSO Z"; for (i=0; i < obj->o_num; i++) { AMFObjectProperty *p = &obj->o_props[i]; printf(" -C "); if (p->p_name.av_val) printf("N"); printf("%c:", opt[p->p_type]); if (p->p_name.av_val) printf("%.*s:", p->p_name.av_len, p->p_name.av_val); switch(p->p_type) { case AMF_BOOLEAN: printf("%d", p->p_vu.p_number != 0); break; case AMF_STRING: printf("%.*s", p->p_vu.p_aval.av_len, p->p_vu.p_aval.av_val); break; case AMF_NUMBER: printf("%f", p->p_vu.p_number); break; case AMF_OBJECT: printf("1"); dumpAMF(&p->p_vu.p_object); printf(" -C O:0"); break; case AMF_NULL: break; default: printf("<type %d>", p->p_type); } } }
static char * dumpAMF(AMFObject *obj, char *ptr, AVal *argv, int *argc) { int i, len, ac = *argc; const char opt[] = "NBSO Z"; for (i=0, len=0; i < obj->o_num; i++) { AMFObjectProperty *p = &obj->o_props[i]; argv[ac].av_val = ptr+1; argv[ac++].av_len = 2; ptr += sprintf(ptr, " -C "); argv[ac].av_val = ptr; if (p->p_name.av_val) *ptr++ = 'N'; *ptr++ = opt[p->p_type]; *ptr++ = ':'; if (p->p_name.av_val) ptr += sprintf(ptr, "%.*s:", p->p_name.av_len, p->p_name.av_val); switch(p->p_type) { case AMF_BOOLEAN: *ptr++ = p->p_vu.p_number != 0 ? '1' : '0'; argv[ac].av_len = ptr - argv[ac].av_val; break; case AMF_STRING: memcpy(ptr, p->p_vu.p_aval.av_val, p->p_vu.p_aval.av_len); ptr += p->p_vu.p_aval.av_len; argv[ac].av_len = ptr - argv[ac].av_val; break; case AMF_NUMBER: ptr += sprintf(ptr, "%f", p->p_vu.p_number); argv[ac].av_len = ptr - argv[ac].av_val; break; case AMF_OBJECT: *ptr++ = '1'; argv[ac].av_len = ptr - argv[ac].av_val; ac++; *argc = ac; ptr = dumpAMF(&p->p_vu.p_object, ptr, argv, argc); ac = *argc; argv[ac].av_val = ptr+1; argv[ac++].av_len = 2; argv[ac].av_val = ptr+4; argv[ac].av_len = 3; ptr += sprintf(ptr, " -C O:0"); break; case AMF_NULL: default: argv[ac].av_len = ptr - argv[ac].av_val; break; } ac++; } *argc = ac; return ptr; }
// Returns 0 for OK/Failed/error, 1 for 'Stop or Complete' int ServeInvoke(STREAMING_SERVER *server, RTMP * r, RTMPPacket *packet, unsigned int offset) { const char *body; unsigned int nBodySize; int ret = 0, nRes; body = packet->m_body + offset; nBodySize = packet->m_nBodySize - offset; if (body[0] != 0x02) // make sure it is a string method name we start with { RTMP_Log(RTMP_LOGWARNING, "%s, Sanity failed. no string method in invoke packet", __FUNCTION__); return 0; } AMFObject obj; nRes = AMF_Decode(&obj, body, nBodySize, FALSE); if (nRes < 0) { RTMP_Log(RTMP_LOGERROR, "%s, error decoding invoke packet", __FUNCTION__); return 0; } AMF_Dump(&obj); AVal method; AMFProp_GetString(AMF_GetProp(&obj, NULL, 0), &method); double txn = AMFProp_GetNumber(AMF_GetProp(&obj, NULL, 1)); RTMP_Log(RTMP_LOGDEBUG, "%s, client invoking <%s>", __FUNCTION__, method.av_val); if (AVMATCH(&method, &av_connect)) { AMFObject cobj; AVal pname, pval; int i; server->connect = packet->m_body; packet->m_body = NULL; AMFProp_GetObject(AMF_GetProp(&obj, NULL, 2), &cobj); for (i=0; i<cobj.o_num; i++) { pname = cobj.o_props[i].p_name; pval.av_val = NULL; pval.av_len = 0; if (cobj.o_props[i].p_type == AMF_STRING) pval = cobj.o_props[i].p_vu.p_aval; if (AVMATCH(&pname, &av_app)) { r->Link.app = pval; pval.av_val = NULL; if (!r->Link.app.av_val) r->Link.app.av_val = ""; server->arglen += 6 + pval.av_len; server->argc += 2; } else if (AVMATCH(&pname, &av_flashVer)) { r->Link.flashVer = pval; pval.av_val = NULL; server->arglen += 6 + pval.av_len; server->argc += 2; } else if (AVMATCH(&pname, &av_swfUrl)) { r->Link.swfUrl = pval; pval.av_val = NULL; server->arglen += 6 + pval.av_len; server->argc += 2; } else if (AVMATCH(&pname, &av_tcUrl)) { r->Link.tcUrl = pval; pval.av_val = NULL; server->arglen += 6 + pval.av_len; server->argc += 2; } else if (AVMATCH(&pname, &av_pageUrl)) { r->Link.pageUrl = pval; pval.av_val = NULL; server->arglen += 6 + pval.av_len; server->argc += 2; } else if (AVMATCH(&pname, &av_audioCodecs)) { r->m_fAudioCodecs = cobj.o_props[i].p_vu.p_number; } else if (AVMATCH(&pname, &av_videoCodecs)) { r->m_fVideoCodecs = cobj.o_props[i].p_vu.p_number; } else if (AVMATCH(&pname, &av_objectEncoding)) { r->m_fEncoding = cobj.o_props[i].p_vu.p_number; } } /* Still have more parameters? Copy them */ if (obj.o_num > 3) { int i = obj.o_num - 3; r->Link.extras.o_num = i; r->Link.extras.o_props = malloc(i*sizeof(AMFObjectProperty)); memcpy(r->Link.extras.o_props, obj.o_props+3, i*sizeof(AMFObjectProperty)); obj.o_num = 3; server->arglen += countAMF(&r->Link.extras, &server->argc); } SendConnectResult(r, txn); } else if (AVMATCH(&method, &av_createStream)) { SendResultNumber(r, txn, ++server->streamID); } else if (AVMATCH(&method, &av_getStreamLength)) { SendResultNumber(r, txn, 10.0); } else if (AVMATCH(&method, &av_play)) { char *file, *p, *q, *cmd, *ptr; AVal *argv, av; int len, argc; uint32_t now; RTMPPacket pc = {0}; AMFProp_GetString(AMF_GetProp(&obj, NULL, 3), &r->Link.playpath); /* r->Link.seekTime = AMFProp_GetNumber(AMF_GetProp(&obj, NULL, 4)); if (obj.o_num > 5) r->Link.length = AMFProp_GetNumber(AMF_GetProp(&obj, NULL, 5)); */ if (r->Link.tcUrl.av_len) { len = server->arglen + r->Link.playpath.av_len + 4 + sizeof("rtmpdump") + r->Link.playpath.av_len + 12; server->argc += 5; cmd = malloc(len + server->argc * sizeof(AVal)); ptr = cmd; argv = (AVal *)(cmd + len); argv[0].av_val = cmd; argv[0].av_len = sizeof("rtmpdump")-1; ptr += sprintf(ptr, "rtmpdump"); argc = 1; argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr," -r \"%s\"", r->Link.tcUrl.av_val); argv[argc++].av_len = r->Link.tcUrl.av_len; if (r->Link.app.av_val) { argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr, " -a \"%s\"", r->Link.app.av_val); argv[argc++].av_len = r->Link.app.av_len; } if (r->Link.flashVer.av_val) { argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr, " -f \"%s\"", r->Link.flashVer.av_val); argv[argc++].av_len = r->Link.flashVer.av_len; } if (r->Link.swfUrl.av_val) { argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr, " -W \"%s\"", r->Link.swfUrl.av_val); argv[argc++].av_len = r->Link.swfUrl.av_len; } if (r->Link.pageUrl.av_val) { argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr, " -p \"%s\"", r->Link.pageUrl.av_val); argv[argc++].av_len = r->Link.pageUrl.av_len; } if (r->Link.extras.o_num) { ptr = dumpAMF(&r->Link.extras, ptr, argv, &argc); AMF_Reset(&r->Link.extras); } argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = ptr + 5; ptr += sprintf(ptr, " -y \"%.*s\"", r->Link.playpath.av_len, r->Link.playpath.av_val); argv[argc++].av_len = r->Link.playpath.av_len; av = r->Link.playpath; /* strip trailing URL parameters */ q = memchr(av.av_val, '?', av.av_len); if (q) { if (q == av.av_val) { av.av_val++; av.av_len--; } else { av.av_len = q - av.av_val; } } /* strip leading slash components */ for (p=av.av_val+av.av_len-1; p>=av.av_val; p--) if (*p == '/') { p++; av.av_len -= p - av.av_val; av.av_val = p; break; } /* skip leading dot */ if (av.av_val[0] == '.') { av.av_val++; av.av_len--; } file = malloc(av.av_len+5); memcpy(file, av.av_val, av.av_len); file[av.av_len] = '\0'; for (p=file; *p; p++) if (*p == ':') *p = '_'; /* Add extension if none present */ if (file[av.av_len - 4] != '.') { av.av_len += 4; } /* Always use flv extension, regardless of original */ if (strcmp(file+av.av_len-4, ".flv")) { strcpy(file+av.av_len-4, ".flv"); } argv[argc].av_val = ptr + 1; argv[argc++].av_len = 2; argv[argc].av_val = file; argv[argc].av_len = av.av_len; ptr += sprintf(ptr, " -o %s", file); now = RTMP_GetTime(); if (now - server->filetime < DUPTIME && AVMATCH(&argv[argc], &server->filename)) { printf("Duplicate request, skipping.\n"); free(file); } else { printf("\n%s\n\n", cmd); fflush(stdout); server->filetime = now; free(server->filename.av_val); server->filename = argv[argc++]; spawn_dumper(argc, argv, cmd); } free(cmd); } pc.m_body = server->connect; server->connect = NULL; RTMPPacket_Free(&pc); ret = 1; RTMP_SendCtrl(r, 0, 1, 0); SendPlayStart(r); RTMP_SendCtrl(r, 1, 1, 0); SendPlayStop(r); } AMF_Reset(&obj); return ret; }