expand tabs and add vim modeline

1 files changed, 155 insertions, 153 deletions

diff --git a/tinyrtc.c b/tinyrtc.c
index 2b74890..54bb9b9 100644
--- a/tinyrtc.c
+++ b/tinyrtc.c
@@ -26,11 +26,11 @@
  * OF SUCH DAMAGE.
  */
 
-#include <ifaddrs.h>					// freeifaddrs, getifaddrs
+#include <ifaddrs.h>                    // freeifaddrs, getifaddrs
 #include <stdbool.h>
-#include <stdio.h>						// snprintf
-#include <string.h>						// memset
-#include <unistd.h>						// close
+#include <stdio.h>                      // snprintf
+#include <string.h>                     // memset
+#include <unistd.h>                     // close
 
 #include <arpa/inet.h>
 #include <net/if.h>
@@ -43,26 +43,26 @@
 ///  OPAQUE TYPE DEFINITIONS  ////////////////////////////////////////////////
 
 struct trtc_peerconn_t {
-	bool active;
+    bool active;
 
-	char offer[TRTC_MAX_SDP_SIZE];
-	char answer[TRTC_MAX_SDP_SIZE];
+    char offer[TRTC_MAX_SDP_SIZE];
+    char answer[TRTC_MAX_SDP_SIZE];
 
-	/* local description */
-	const char* ldesc;
+    /* local description */
+    const char* ldesc;
 
-	/* remote description */
-	const char* rdesc;
+    /* remote description */
+    const char* rdesc;
 
-	char l_ice_pwd[TRTC_MAX_ICE_PWD_SIZE];
-	char l_ice_ufrag[TRTC_MAX_ICE_UFRAG_SIZE];
+    char l_ice_pwd[TRTC_MAX_ICE_PWD_SIZE];
+    char l_ice_ufrag[TRTC_MAX_ICE_UFRAG_SIZE];
 
-	/* onIceCandidate callback */
-	trtc_on_ice_candidate_t* on_ice_candidate;
-	void* on_ice_candidate_arg;
+    /* onIceCandidate callback */
+    trtc_on_ice_candidate_t* on_ice_candidate;
+    void* on_ice_candidate_arg;
 
-	/* tcp host candidate socket */
-	int host_tcp_fd;
+    /* tcp host candidate socket */
+    int host_tcp_fd;
 };
 
 
@@ -74,7 +74,7 @@ static struct trtc_peerconn_t peer_connection_pool[TRTC_MAX_PEER_CONNECTIONS];
 ///  RTC PEER CONNECTION API  ////////////////////////////////////////////////
 
 void trtc_init() {
-	memset(peer_connection_pool, 0, sizeof(peer_connection_pool));
+    memset(peer_connection_pool, 0, sizeof(peer_connection_pool));
 }
 
 /**
@@ -83,72 +83,72 @@ void trtc_init() {
  * \return 0 on success, -1 on error.
  */
 static int get_host_candidates(struct trtc_peerconn_t* pc) {
-	struct ifaddrs *ifaddr, *ifa;
-	socklen_t laddrlen;
-
-	/* sanity check */
-	if (!pc) return -1;
-
-	/* create tcp socket */
-	pc->host_tcp_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
-	if (-1 == pc->host_tcp_fd) {
-		return -1;
-	}
-
-	/* bind to arbitrary port */
-	struct sockaddr_in laddr = {
-		.sin_family = AF_INET,
-		.sin_addr.s_addr = INADDR_ANY,
-		.sin_port = 0,
-	};
-	if (-1 == bind(pc->host_tcp_fd, (struct sockaddr*)&laddr, sizeof(laddr))) {
-		return -1;
-	}
-	laddrlen = sizeof(struct sockaddr_in);
-	if (-1 == getsockname(pc->host_tcp_fd, (struct sockaddr *)&laddr, &laddrlen)) {
-		return -1;
-	}
-
-	/* listen on socket */
-	if (-1 == listen(pc->host_tcp_fd, 0)) {
-		return -1;
-	}
-
-	/* get network interface addresses */
-	if (-1 == getifaddrs(&ifaddr)) {
-		return -1;
-	}
-
-	/* iterate over addresses */
-	for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
-		if (!ifa->ifa_addr) continue;
-
-		/* skip loopback interface addresses */
-		if (IFF_LOOPBACK & ifa->ifa_flags) continue;
-
-		if (AF_INET == ifa->ifa_addr->sa_family) {
-			struct sockaddr_in *sa = (struct sockaddr_in*)ifa->ifa_addr;
-
-			/* host tcp candidate */
-			struct trtc_ice_candidate_t c = {
-				.sdp_mid = "0",
-				.sdp_mline_index = 0
-			};
-			snprintf(c.candidate, TRTC_MAX_ICE_CANDIDATE_SIZE,
-				"candidate:2894319779 1 tcp 212260223 %s %d typ host tcptype passive",
-				inet_ntoa(sa->sin_addr),
-				laddr.sin_port); // XXXX
-
-			/* callback */
-			if (pc->on_ice_candidate) {
-				pc->on_ice_candidate(c, pc->on_ice_candidate_arg);
-			}
-		}
-	}
-
-	freeifaddrs(ifaddr);
-
-	return 0;
+    struct ifaddrs *ifaddr, *ifa;
+    socklen_t laddrlen;
+
+    /* sanity check */
+    if (!pc) return -1;
+
+    /* create tcp socket */
+    pc->host_tcp_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+    if (-1 == pc->host_tcp_fd) {
+        return -1;
+    }
+
+    /* bind to arbitrary port */
+    struct sockaddr_in laddr = {
+        .sin_family = AF_INET,
+        .sin_addr.s_addr = INADDR_ANY,
+        .sin_port = 0,
+    };
+    if (-1 == bind(pc->host_tcp_fd, (struct sockaddr*)&laddr, sizeof(laddr))) {
+        return -1;
+    }
+    laddrlen = sizeof(struct sockaddr_in);
+    if (-1 == getsockname(pc->host_tcp_fd, (struct sockaddr *)&laddr, &laddrlen)) {
+        return -1;
+    }
+
+    /* listen on socket */
+    if (-1 == listen(pc->host_tcp_fd, 0)) {
+        return -1;
+    }
+
+    /* get network interface addresses */
+    if (-1 == getifaddrs(&ifaddr)) {
+        return -1;
+    }
+
+    /* iterate over addresses */
+    for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
+        if (!ifa->ifa_addr) continue;
+
+        /* skip loopback interface addresses */
+        if (IFF_LOOPBACK & ifa->ifa_flags) continue;
+
+        if (AF_INET == ifa->ifa_addr->sa_family) {
+            struct sockaddr_in *sa = (struct sockaddr_in*)ifa->ifa_addr;
+
+            /* host tcp candidate */
+            struct trtc_ice_candidate_t c = {
+                .sdp_mid = "0",
+                .sdp_mline_index = 0
+            };
+            snprintf(c.candidate, TRTC_MAX_ICE_CANDIDATE_SIZE,
+                "candidate:2894319779 1 tcp 212260223 %s %d typ host tcptype passive",
+                inet_ntoa(sa->sin_addr),
+                laddr.sin_port); // XXXX
+
+            /* callback */
+            if (pc->on_ice_candidate) {
+                pc->on_ice_candidate(c, pc->on_ice_candidate_arg);
+            }
+        }
+    }
+
+    freeifaddrs(ifaddr);
+
+    return 0;
 }
 
 /**
@@ -162,100 +162,102 @@ static int get_host_candidates(struct trtc_peerconn_t* pc) {
  * \return NULL.
  */
 static void* peer_connection_thread(void *arg) {
-	return NULL;
+    return NULL;
 }
 
 struct trtc_peerconn_t* trtc_peer_connection(struct trtc_config_t cfg) {
-	struct trtc_peerconn_t* pc = NULL;
+    struct trtc_peerconn_t* pc = NULL;
 
-	for (int i = 0; i < TRTC_MAX_PEER_CONNECTIONS; i++) {
-		if (!peer_connection_pool[i].active) {
-			memset(&peer_connection_pool[i], 0, sizeof(struct trtc_peerconn_t));
-			pc = &peer_connection_pool[i];
-			break;
-		}
-	}
+    for (int i = 0; i < TRTC_MAX_PEER_CONNECTIONS; i++) {
+        if (!peer_connection_pool[i].active) {
+            memset(&peer_connection_pool[i], 0, sizeof(struct trtc_peerconn_t));
+            pc = &peer_connection_pool[i];
+            break;
+        }
+    }
 
-	return pc;
+    return pc;
 }
 
 void trtc_peer_connection_destroy(struct trtc_peerconn_t* pc) {
-	if (!pc) return;
+    if (!pc) return;
 
-	close(pc->host_tcp_fd);
+    close(pc->host_tcp_fd);
 
-	// XXX mark as available
+    // XXX mark as available
 }
 
 int trtc_set_on_ice_candidate(
-	struct trtc_peerconn_t* pc,
-	trtc_on_ice_candidate_t* cb,
-	void* arg
+    struct trtc_peerconn_t* pc,
+    trtc_on_ice_candidate_t* cb,
+    void* arg
 ) {
-	if (!pc || !cb) return -1;
+    if (!pc || !cb) return -1;
 
-	pc->on_ice_candidate = cb;
-	pc->on_ice_candidate_arg = arg;
+    pc->on_ice_candidate = cb;
+    pc->on_ice_candidate_arg = arg;
 
-	return 0;
+    return 0;
 }
 
 int trtc_add_ice_candidate(struct trtc_peerconn_t *pc, const struct trtc_ice_candidate_t c) {
-	return -1;
+    return -1;
 };
 
 const char * trtc_create_answer(struct trtc_peerconn_t *pc) {
-	unsigned char fp[32];
-
-	snprintf(pc->l_ice_ufrag, TRTC_MAX_ICE_UFRAG_SIZE, "xxxx"); // XXX
-	snprintf(pc->l_ice_pwd, TRTC_MAX_ICE_PWD_SIZE, "xxxxxxxxxxxxxxxxxxxxxx"); // XXX
-
-	snprintf(pc->answer, TRTC_MAX_SDP_SIZE,
-		"v=0\\r\\n"
-		"o=- 2210401696197537454 2 IN IP4 127.0.0.1\\r\\n" // XXX
-		"s=-\\r\\n"
-		"u=https://tinyrtc.org/\\r\\n"
-		"t=0 0\\r\\n"
-		"a=group:BUNDLE 0\\r\\n"
-		"a=msid-semantic: WMS\\r\\n"
-		"m=video 9 UDP/TLS/RTP/SAVPF 98\\r\\n" // XXX
-		"c=IN IP4 0.0.0.0\\r\\n"
-		"a=rtcp:9 IN IP4 0.0.0.0\\r\\n"
-		"a=ice-ufrag:%s\\r\\n"
-		"a=ice-pwd:%s\\r\\n"
-		"a=ice-options:trickle\\r\\n"
-		"a=fingerprint:sha-256 "
-			"%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
-			"%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
-			"%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
-			"%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX\\r\\n"
-		"a=setup:passive\\r\\n"
-		"a=mid:0\\r\\n"
-		"a=sendonly\\r\\n"
-		"a=rtcp-mux\\r\\n"
-		"a=rtcp-rsize\\r\\n"
-		"a=rtpmap:98 H264/90000\\r\\n"
-		"a=rtcp-fb:98 nack\\r\\n"
-		"a=rtcp-fb:98 nack pli\\r\\n"
-		"a=fmtp:98 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n",
-		pc->l_ice_ufrag,
-		pc->l_ice_pwd,
-		fp[ 0], fp[ 1], fp[ 2], fp[ 3], fp[ 4], fp[ 5], fp[ 6], fp[ 7],
-		fp[ 8], fp[ 9], fp[10], fp[11], fp[12], fp[13], fp[14], fp[15],
-		fp[16], fp[17], fp[18], fp[19], fp[20], fp[21], fp[22], fp[23],
-		fp[24], fp[25], fp[26], fp[27], fp[28], fp[29], fp[30], fp[31]
-	);
-
-	return pc->answer;
+    unsigned char fp[32];
+
+    snprintf(pc->l_ice_ufrag, TRTC_MAX_ICE_UFRAG_SIZE, "xxxx"); // XXX
+    snprintf(pc->l_ice_pwd, TRTC_MAX_ICE_PWD_SIZE, "xxxxxxxxxxxxxxxxxxxxxx"); // XXX
+
+    snprintf(pc->answer, TRTC_MAX_SDP_SIZE,
+        "v=0\\r\\n"
+        "o=- 2210401696197537454 2 IN IP4 127.0.0.1\\r\\n" // XXX
+        "s=-\\r\\n"
+        "u=https://tinyrtc.org/\\r\\n"
+        "t=0 0\\r\\n"
+        "a=group:BUNDLE 0\\r\\n"
+        "a=msid-semantic: WMS\\r\\n"
+        "m=video 9 UDP/TLS/RTP/SAVPF 98\\r\\n" // XXX
+        "c=IN IP4 0.0.0.0\\r\\n"
+        "a=rtcp:9 IN IP4 0.0.0.0\\r\\n"
+        "a=ice-ufrag:%s\\r\\n"
+        "a=ice-pwd:%s\\r\\n"
+        "a=ice-options:trickle\\r\\n"
+        "a=fingerprint:sha-256 "
+            "%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
+            "%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
+            "%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:"
+            "%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX\\r\\n"
+        "a=setup:passive\\r\\n"
+        "a=mid:0\\r\\n"
+        "a=sendonly\\r\\n"
+        "a=rtcp-mux\\r\\n"
+        "a=rtcp-rsize\\r\\n"
+        "a=rtpmap:98 H264/90000\\r\\n"
+        "a=rtcp-fb:98 nack\\r\\n"
+        "a=rtcp-fb:98 nack pli\\r\\n"
+        "a=fmtp:98 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n",
+        pc->l_ice_ufrag,
+        pc->l_ice_pwd,
+        fp[ 0], fp[ 1], fp[ 2], fp[ 3], fp[ 4], fp[ 5], fp[ 6], fp[ 7],
+        fp[ 8], fp[ 9], fp[10], fp[11], fp[12], fp[13], fp[14], fp[15],
+        fp[16], fp[17], fp[18], fp[19], fp[20], fp[21], fp[22], fp[23],
+        fp[24], fp[25], fp[26], fp[27], fp[28], fp[29], fp[30], fp[31]
+    );
+
+    return pc->answer;
 };
 
 int trtc_set_local_description(struct trtc_peerconn_t *pc, const char *sdp) {
-	pc->ldesc = sdp;
-	get_host_candidates(pc);
-	return -1;
+    pc->ldesc = sdp;
+    get_host_candidates(pc);
+    return -1;
 };
 
 int trtc_set_remote_description(struct trtc_peerconn_t *pc, const char *sdp) {
-	pc->rdesc = sdp;
-	return -1;
+    pc->rdesc = sdp;
+    return -1;
 };
+
+/* vim: set et ts=4 sw=4 : */