mirror of https://bitbucket.org/ausocean/av.git
336 lines
9.0 KiB
Go
336 lines
9.0 KiB
Go
/*
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NAME
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parseurl.go
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DESCRIPTION
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See Readme.md
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AUTHOR
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Saxon Nelson-Milton <saxon@ausocean.org>
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LICENSE
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parseurl.go is Copyright (C) 2017-2018 the Australian Ocean Lab (AusOcean)
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It is free software: you can redistribute it and/or modify them
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with revid in gpl.txt. If not, see http://www.gnu.org/licenses.
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Derived from librtmp under the GNU Lesser General Public License 2.1
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Copyright (C) 2005-2008 Team XBMC http://www.xbmc.org
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Copyright (C) 2008-2009 Andrej Stepanchuk
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Copyright (C) 2009-2010 Howard Chu
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*/
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package rtmp
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import (
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"fmt"
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"log"
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"strconv"
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"strings"
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"unsafe"
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)
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// int RTMP_ParseURL(const char *url, int *protocol, AVal *host, unsigned int *port,
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// AVal *playpath, AVal *app);
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// parseurl.c +33
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func C_RTMP_ParseURL(url *byte, protocol *int32, host *C_AVal, port *uint32,
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playpath *C_AVal, app *C_AVal) int {
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var p, end, col, ques, slash *byte
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// TODO: use our logger here
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// RTMP_Log(RTMP_LOGDEBUG, "Parsing...");
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*protocol = RTMP_PROTOCOL_RTMP
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*port = 0
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playpath.av_len = 0
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playpath.av_val = nil
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app.av_len = 0
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app.av_val = nil
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p = strstr(url, goStrToCStr("://"))
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if p == nil {
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// TODO: use our logger here
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log.Println("RTMP URL: No :// in url!")
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return 0
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}
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/*
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NOTE: the following code nees to be ported if we're using anything other than
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rtmp!
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{
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int len = (int)(p-url);
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if(len == 4 && strncasecmp(url, "rtmp", 4)==0)
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*protocol = RTMP_PROTOCOL_RTMP;
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else if(len == 5 && strncasecmp(url, "rtmpt", 5)==0)
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*protocol = RTMP_PROTOCOL_RTMPT;
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else if(len == 5 && strncasecmp(url, "rtmps", 5)==0)
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*protocol = RTMP_PROTOCOL_RTMPS;
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else if(len == 5 && strncasecmp(url, "rtmpe", 5)==0)
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*protocol = RTMP_PROTOCOL_RTMPE;
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else if(len == 5 && strncasecmp(url, "rtmfp", 5)==0)
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*protocol = RTMP_PROTOCOL_RTMFP;
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else if(len == 6 && strncasecmp(url, "rtmpte", 6)==0)
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*protocol = RTMP_PROTOCOL_RTMPTE;
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else if(len == 6 && strncasecmp(url, "rtmpts", 6)==0)
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*protocol = RTMP_PROTOCOL_RTMPTS;
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else {
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RTMP_Log(RTMP_LOGWARNING, "Unknown protocol!\n");
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goto parsehost;
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}
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}
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*/
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// TODO: implement new logger here
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// RTMP_Log(RTMP_LOGDEBUG, "Parsed protocol: %d", *protocol);
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// Get the hostname
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 3))
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// check for sudden death
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if *p == 0 {
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// TODO: use new logger here
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// RTMP_Log(RTMP_LOGWARNING, "No hostname in URL!");
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return 0
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}
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end = (*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(p)) + uintptr(strlen(p))))
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col = strchr(p, ':')
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ques = strchr(p, '?')
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slash = strchr(p, '/')
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{
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var hostlen int32
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if slash != nil {
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hostlen = int32(uintptr(unsafe.Pointer(slash)) - uintptr(unsafe.Pointer(p)))
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} else {
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hostlen = int32(uintptr(unsafe.Pointer(end)) - uintptr(unsafe.Pointer(p)))
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}
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if col != nil && int32(uintptr(unsafe.Pointer(col))-uintptr(unsafe.Pointer(p))) < hostlen {
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hostlen = int32(uintptr(unsafe.Pointer(col)) - uintptr(unsafe.Pointer(p)))
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}
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if hostlen < 256 {
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host.av_val = (*byte)(unsafe.Pointer(p))
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host.av_len = int32(hostlen)
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// TODO: use new logger with this
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//RTMP_Log(RTMP_LOGDEBUG, "Parsed host : %.*s", hostlen, host.av_val);
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} else {
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// TODO: use new logger with this
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// RTMP_Log(RTMP_LOGWARNING, "Hostname exceeds 255 characters!");
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}
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p = (*byte)(incBytePtr(unsafe.Pointer(p), int(hostlen)))
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}
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// get port number if available
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if *p == ':' {
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var p2 uint32
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 1))
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tmp, _ := strconv.Atoi(cStrToGoStr(p))
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p2 = uint32(tmp)
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if p2 > 65535 {
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// TODO: use new logger with this
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// RTMP_Log(RTMP_LOGWARNING, "Invalid port number!");
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} else {
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*port = p2
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}
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}
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if slash == nil {
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// TODO: use new logger
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// RTMP_Log(RTMP_LOGWARNING, "No application or playpath in URL!");
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return 1
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}
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p = (*byte)(incBytePtr(unsafe.Pointer(slash), 1))
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{
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/* parse application
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*
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* rtmp://host[:port]/app[/appinstance][/...]
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* application = app[/appinstance]
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*/
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var slash2 *byte
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var slash3 *byte = nil
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var slash4 *byte = nil
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var applen, appnamelen int32
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slash2 = strchr(p, '/')
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if slash2 != nil {
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slash3 = strchr((*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(slash2))+
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uintptr(1))), '/')
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}
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if slash3 != nil {
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slash4 = strchr((*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(slash3))+
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uintptr(1))), '/')
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}
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// ondemand, pass all parameters as app
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applen = int32(uintptr(unsafe.Pointer(end)) - uintptr(unsafe.Pointer(p)))
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appnamelen = applen
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switch {
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case ques != nil && strstr(p, goStrToCStr("slist=")) != nil:
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appnamelen = int32(uintptr(unsafe.Pointer(ques)) - uintptr(unsafe.Pointer(p)))
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case strings.Compare(cStrToGoStr(p)[:9], "ondemand/") == 0:
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/* app = ondemand/foobar, only pass app=ondemand */
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applen = 8
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appnamelen = 8
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default:
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switch {
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case slash4 != nil:
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appnamelen = int32(uintptr(unsafe.Pointer(slash4)) - uintptr(
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unsafe.Pointer(p)))
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case slash3 != nil:
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appnamelen = int32(uintptr(unsafe.Pointer(slash3)) - uintptr(
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unsafe.Pointer(p)))
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case slash2 != nil:
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appnamelen = int32(uintptr(unsafe.Pointer(slash2)) - uintptr(
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unsafe.Pointer(p)))
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}
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applen = appnamelen
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}
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app.av_val = (*byte)(unsafe.Pointer(p))
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app.av_len = int32(applen)
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// TODO: use new logging here
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// RTMP_Log(RTMP_LOGDEBUG, "Parsed app : %.*s", applen, p);
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p = (*byte)(incBytePtr(unsafe.Pointer(p), int(appnamelen)))
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}
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if *p == '/' {
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 1))
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}
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// NOTE: don't think we currently need this section - see 787 for this func
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if int(uintptr(unsafe.Pointer(end))-uintptr(unsafe.Pointer(p))) != 0 {
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var av C_AVal
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av.av_val = (*byte)(unsafe.Pointer(p))
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av.av_len = int32(uintptr(unsafe.Pointer(end)) - uintptr(unsafe.Pointer(p)))
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// TODO: port THis
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//C.RTMP_ParsePlaypath(&av, playpath)
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C_RTMP_ParsePlaypath(&av, playpath)
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}
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return 1
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}
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// void RTMP_ParsePlaypath(AVal *in, AVal *out);
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// parseurl.c +201
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func C_RTMP_ParsePlaypath(in, out *C_AVal) {
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var addMP4 int32 = 0
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var addMP3 int32 = 0
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var subExt int32 = 0
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playpath := in.av_val
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var temp, q *byte
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var ext *byte = nil
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ppstart := (*byte)(unsafe.Pointer(playpath))
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var streamname, destptr, p *byte
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pplen := int32(in.av_len)
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out.av_val = nil
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out.av_len = 0
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temp = strstr((*byte)(unsafe.Pointer(ppstart)), goStrToCStr("slist="))
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if *ppstart == '?' && temp != nil {
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ppstart = (*byte)(incBytePtr(unsafe.Pointer(temp), 6))
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pplen = int32(strlen(ppstart))
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temp = strchr(ppstart, '&')
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if temp != nil {
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pplen = int32(uintptr(unsafe.Pointer(temp)) - uintptr(unsafe.Pointer(ppstart)))
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}
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}
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q = strchr(ppstart, '?')
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if pplen >= 4 {
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if q != nil {
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ext = (*byte)(decBytePtr(unsafe.Pointer(q), 4))
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} else {
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ext = (*byte)(indxBytePtr(unsafe.Pointer(ppstart), int(uintptr(pplen)-
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uintptr(4))))
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}
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switch {
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case strings.Compare(cStrToGoStr(ext)[:4], ".f4v") == 0 ||
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strings.Compare(cStrToGoStr(ext)[:4], ".mp4") == 0:
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addMP4 = 1
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subExt = 1
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case ppstart == (*byte)(unsafe.Pointer(playpath)) && strings.Compare(
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cStrToGoStr(ext)[:4], ".flv") == 0:
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subExt = 1
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case strings.Compare(cStrToGoStr(ext)[:4], ".mp3") == 0:
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addMP3 = 1
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subExt = 1
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}
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}
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streamname = (*byte)(malloc(uintptr(pplen + 4 + 1)))
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if streamname == nil {
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return
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}
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destptr = streamname
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switch {
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case addMP4 != 0:
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if strings.Compare(cStrToGoStr(ppstart)[:4], "mp4") != 0 {
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memmove(unsafe.Pointer(destptr), unsafe.Pointer(goStrToCStr("mp4:")),
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uintptr(len("mp4:")))
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destptr = (*byte)(incBytePtr(unsafe.Pointer(destptr), 4))
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} else {
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subExt = 0
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}
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case addMP3 != 0:
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if strings.Compare(cStrToGoStr(ppstart)[:4], "mp3") != 0 {
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memmove(unsafe.Pointer(destptr), unsafe.Pointer(goStrToCStr("mp3:")),
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uintptr(len("mp4:")))
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destptr = (*byte)(incBytePtr(unsafe.Pointer(destptr), 4))
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} else {
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subExt = 0
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}
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}
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p = (*byte)(ppstart)
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for pplen > 0 {
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if subExt != 0 && p == ext {
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 4))
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pplen -= 4
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continue
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}
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if *p == '%' {
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var c uint32
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fmt.Sscanf(cStrToGoStr((*byte)(incBytePtr(unsafe.Pointer(p), 1))), "%02x", &c)
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*indxBytePtr(unsafe.Pointer(destptr), 0) = byte(c)
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destptr = (*byte)(incBytePtr(unsafe.Pointer(destptr), 1))
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pplen -= 3
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 3))
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} else {
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*indxBytePtr(unsafe.Pointer(destptr), 0) = *p
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destptr = (*byte)(incBytePtr(unsafe.Pointer(destptr), 1))
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p = (*byte)(incBytePtr(unsafe.Pointer(p), 1))
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pplen--
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}
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}
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*destptr = '\x00'
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out.av_val = (*byte)(unsafe.Pointer(streamname))
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out.av_len = int32(uintptr(unsafe.Pointer(destptr)) - uintptr(unsafe.Pointer(
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streamname)))
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}
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