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Try all addresses for the hostname in an invitation URL.

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This commit is contained in:
Guus Sliepen 2015-05-15 23:35:46 +02:00
parent 54a8bd78e3
commit 613c121cdc
1 changed files with 24 additions and 9 deletions
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33
src/invitation.c
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@ -921,16 +921,31 @@ int cmd_join(int argc, char *argv[]) {
if(!ai)
return 1;
sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if(sock <= 0) {
fprintf(stderr, "Could not open socket: %s\n", strerror(errno));
return 1;
struct addrinfo *aip = NULL;
next:
if(!aip)
aip = ai;
else {
aip = aip->ai_next;
if(!aip)
return 1;
}
if(connect(sock, ai->ai_addr, ai->ai_addrlen)) {
fprintf(stderr, "Could not connect to %s port %s: %s\n", address, port, strerror(errno));
sock = socket(aip->ai_family, aip->ai_socktype, aip->ai_protocol);
if(sock <= 0) {
fprintf(stderr, "Could not open socket: %s\n", strerror(errno));
goto next;
}
if(connect(sock, aip->ai_addr, aip->ai_addrlen)) {
char *addrstr, *portstr;
sockaddr2str((sockaddr_t *)aip->ai_addr, &addrstr, &portstr);
fprintf(stderr, "Could not connect to %s port %s: %s\n", addrstr, portstr, strerror(errno));
free(addrstr);
free(portstr);
closesocket(sock);
return 1;
goto next;
}
fprintf(stderr, "Connected to %s port %s...\n", address, port);
@ -943,7 +958,7 @@ int cmd_join(int argc, char *argv[]) {
if(!sendline(sock, "0 ?%s %d.%d", b64key, PROT_MAJOR, 1)) {
fprintf(stderr, "Error sending request to %s port %s: %s\n", address, port, strerror(errno));
closesocket(sock);
return 1;
goto next;
}
char hisname[4096] = "";
@ -952,7 +967,7 @@ int cmd_join(int argc, char *argv[]) {
if(!recvline(sock, line, sizeof line) || sscanf(line, "%d %s %d.%d", &code, hisname, &hismajor, &hisminor) < 3 || code != 0 || hismajor != PROT_MAJOR || !check_id(hisname) || !recvline(sock, line, sizeof line) || !rstrip(line) || sscanf(line, "%d ", &code) != 1 || code != ACK || strlen(line) < 3) {
fprintf(stderr, "Cannot read greeting from peer\n");
closesocket(sock);
return 1;
goto next;
}
// Check if the hash of the key he gave us matches the hash in the URL.