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Make sure buffer is zero-terminated when getting external ip
Also switch to HTTP 1.0 to avoid chunked transfer coding.
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@ -103,7 +103,9 @@ static int get_external_ip(struct in_addr *ip)
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int sock;
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int sock;
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struct addrinfo *addr;
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struct addrinfo *addr;
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int res;
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int res;
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const char *getstr = "GET /ip/ HTTP/1.1\r\nHost: api.externalip.net\r\n\r\n";
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const char *getstr = "GET /ip/ HTTP/1.0\r\n"
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/* HTTP 1.0 to avoid chunked transfer coding */
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"Host: api.externalip.net\r\n\r\n";
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char buf[512];
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char buf[512];
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char *b;
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char *b;
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int len;
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int len;
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@ -124,7 +126,9 @@ static int get_external_ip(struct in_addr *ip)
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res = write(sock, getstr, strlen(getstr));
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res = write(sock, getstr, strlen(getstr));
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if (res != strlen(getstr)) return 4;
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if (res != strlen(getstr)) return 4;
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res = read(sock, buf, sizeof(buf));
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/* Zero buf before receiving, leave at least one zero at the end */
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memset(buf, 0, sizeof(buf));
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res = read(sock, buf, sizeof(buf) - 1);
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if (res < 0) return 5;
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if (res < 0) return 5;
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len = res;
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len = res;
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