mirror of
git://git.psyc.eu/libpsyc
synced 2024-08-15 03:19:02 +00:00
167 lines
4 KiB
C
167 lines
4 KiB
C
#include <ctype.h>
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#include "lib.h"
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#include "psyc/uniform.h"
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#include "psyc/parse.h"
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int psyc_uniform_parse (PsycUniform *uni, char *str, size_t length)
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{
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char c;
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PsycString *p;
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size_t pos = 0, part = PSYC_UNIFORM_SCHEME;
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uni->valid = 0;
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uni->full.data = str;
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uni->full.length = length;
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while (pos < length) {
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c = str[pos];
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if (c == ':') {
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uni->scheme.data = str;
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uni->scheme.length = pos++;
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break;
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} else if (!psyc_is_host_char(c))
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return PSYC_PARSE_UNIFORM_INVALID_SCHEME;
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pos++;
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}
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p = &uni->scheme;
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if (p->length == 4 &&
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tolower(p->data[0]) == 'p' &&
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tolower(p->data[1]) == 's' &&
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tolower(p->data[2]) == 'y' &&
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tolower(p->data[3]) == 'c') {
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uni->type = PSYC_SCHEME_PSYC;
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part = PSYC_UNIFORM_SLASHES;
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uni->slashes.data = str + pos;
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uni->slashes.length = 0;
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while (pos < length) {
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c = str[pos];
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switch (part) {
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case PSYC_UNIFORM_SLASHES:
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if (c == '/')
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uni->slashes.length++;
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else return PSYC_PARSE_UNIFORM_INVALID_SLASHES;
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if (uni->slashes.length == 2) {
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part = PSYC_UNIFORM_HOST;
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uni->host.data = str + pos + 1;
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uni->host.length = 0;
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}
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break;
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case PSYC_UNIFORM_HOST:
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if (psyc_is_host_char(c)) {
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uni->host.length++;
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break;
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}
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if (uni->host.length == 0)
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return PSYC_PARSE_UNIFORM_INVALID_HOST;
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if (c == ':') {
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part = PSYC_UNIFORM_PORT;
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p = &uni->port;
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} else if (c == '/') {
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part = PSYC_UNIFORM_RESOURCE;
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p = &uni->resource;
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}
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else return PSYC_PARSE_UNIFORM_INVALID_HOST;
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p->data = str + pos + 1;
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p->length = 0;
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break;
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case PSYC_UNIFORM_PORT:
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if (psyc_is_numeric(c)) {
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uni->port.length++;
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break;
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}
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if (uni->port.length == 0 && c != PSYC_TRANSPORT_GNUNET)
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return PSYC_PARSE_UNIFORM_INVALID_PORT;
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if (c == '/') {
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part = PSYC_UNIFORM_RESOURCE;
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uni->resource.data = str + pos + 1;
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uni->resource.length = 0;
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break;
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}
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else {
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part = PSYC_UNIFORM_TRANSPORT;
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uni->transport.data = str + pos;
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uni->transport.length = 0;
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}
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// fall thru
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case PSYC_UNIFORM_TRANSPORT:
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switch (c) {
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case PSYC_TRANSPORT_GNUNET:
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if (uni->port.length > 0)
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return PSYC_PARSE_UNIFORM_INVALID_TRANSPORT;
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case PSYC_TRANSPORT_TCP:
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case PSYC_TRANSPORT_UDP:
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case PSYC_TRANSPORT_TLS:
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if (uni->transport.length > 0)
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return PSYC_PARSE_UNIFORM_INVALID_TRANSPORT;
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uni->transport.length++;
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break;
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case '/':
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part = PSYC_UNIFORM_RESOURCE;
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uni->resource.data = str + pos + 1;
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uni->resource.length = 0;
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break;
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default:
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return PSYC_PARSE_UNIFORM_INVALID_TRANSPORT;
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}
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break;
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case PSYC_UNIFORM_RESOURCE:
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if (psyc_is_name_char(c)) {
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uni->resource.length++;
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break;
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} else if (c == '#') {
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part = PSYC_UNIFORM_CHANNEL;
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uni->channel.data = str + pos + 1;
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uni->channel.length = 0;
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break;
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} else return PSYC_PARSE_UNIFORM_INVALID_RESOURCE;
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case PSYC_UNIFORM_CHANNEL:
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if (psyc_is_name_char(c)) {
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uni->channel.length++;
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break;
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} else return PSYC_PARSE_UNIFORM_INVALID_CHANNEL;
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}
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pos++;
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}
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if (uni->host.length == 0)
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return PSYC_PARSE_UNIFORM_INVALID_HOST;
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uni->host_port.data = uni->host.data;
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uni->host_port.length = uni->host.length + uni->port.length + uni->transport.length;
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if (uni->port.length > 0 || uni->transport.length > 0)
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uni->host_port.length++;
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uni->root.data = str;
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uni->root.length = uni->scheme.length + 1 + uni->slashes.length +
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uni->host_port.length;
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uni->body.data = uni->host.data;
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uni->body.length = length - uni->scheme.length - 1 - uni->slashes.length;
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if (uni->resource.length) {
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uni->nick.data = uni->resource.data + 1;
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uni->nick.length = uni->resource.length;
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}
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} else return PSYC_PARSE_UNIFORM_INVALID_SCHEME;
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if (uni->host.length == 0)
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return PSYC_PARSE_UNIFORM_INVALID_HOST;
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uni->valid = 1;
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return uni->type;
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}
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