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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* Copyright (c) 2015, Michael Santos <michael.santos@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "xmppipe.h"
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static unsigned char rfc3986[256];
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void
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encode_init()
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{
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int i = 0;
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for (i = 0; i < 256; i++)
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rfc3986[i] = isalnum(i) || i == '~' || i == '-' || i == '.' || i == '_'
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? i : 0;
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}
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char *
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encode(const char *s)
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{
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// XXX overflow
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size_t len = strlen(s);
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char *buf = xmppipe_calloc(1, len * 3 + 1);
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char *p = buf;
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int n = 0;
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for (; *s; s++) {
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// XXX signed
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unsigned char c = *s;
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n = rfc3986[c]
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? sprintf(p, "%c", rfc3986[c])
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: sprintf(p, "%%%02X", c);
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p += n;
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}
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return buf;
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}
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