mirror of https://github.com/moparisthebest/wget
Move some Metalink-related code from http.c to metalink.c.
* src/http.c: Move find_key_value, has_key, find_key_values. * src/metalink.c: To here. * src/metalink.h: Make them non-static and add prototypes here.
This commit is contained in:
Hubert Tarasiuk
Giuseppe Scrivano
parent
92a889b278
commit
225a87d4a2
317
src/http.c
317
src/http.c
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@ -2462,198 +2462,6 @@ set_content_type (int *dt, const char *type)
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}
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#ifdef HAVE_METALINK
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/*
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Find value of given key. This is intended for Link header, but will
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work with any header that uses ';' as field separator and '=' as key-value
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separator.
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Link = "Link" ":" #link-value
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link-value = "<" URI-Reference ">" *( ";" link-param )
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link-param = ( ( "rel" "=" relation-types )
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| ( "anchor" "=" <"> URI-Reference <"> )
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| ( "rev" "=" relation-types )
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| ( "hreflang" "=" Language-Tag )
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| ( "media" "=" ( MediaDesc | ( <"> MediaDesc <"> ) ) )
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| ( "title" "=" quoted-string )
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| ( "title*" "=" ext-value )
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| ( "type" "=" ( media-type | quoted-mt ) )
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| ( link-extension ) )
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link-extension = ( parmname [ "=" ( ptoken | quoted-string ) ] )
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| ( ext-name-star "=" ext-value )
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ext-name-star = parmname "*" ; reserved for RFC2231-profiled
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; extensions. Whitespace NOT
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; allowed in between.
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ptoken = 1*ptokenchar
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ptokenchar = "!" | "#" | "$" | "%" | "&" | "'" | "("
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| ")" | "*" | "+" | "-" | "." | "/" | DIGIT
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| ":" | "<" | "=" | ">" | "?" | "@" | ALPHA
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| "[" | "]" | "^" | "_" | "`" | "{" | "|"
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| "}" | "~"
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media-type = type-name "/" subtype-name
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quoted-mt = <"> media-type <">
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relation-types = relation-type
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| <"> relation-type *( 1*SP relation-type ) <">
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relation-type = reg-rel-type | ext-rel-type
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reg-rel-type = LOALPHA *( LOALPHA | DIGIT | "." | "-" )
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ext-rel-type = URI
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See more: rfc5988
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*/
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static bool
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find_key_value (const char *start, const char *end, const char *key, char **value)
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{
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const char *eq;
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size_t key_len = strlen (key);
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const char *val_beg, *val_end;
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const char *key_beg;
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key_beg = start;
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while (key_beg + key_len + 1 < end)
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{
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/* Skip whitespaces. */
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while (key_beg + key_len + 1 < end && c_isspace (*key_beg))
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key_beg++;
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if (strncmp (key_beg, key, key_len))
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{
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/* Find next token. */
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while (key_beg + key_len + 1 < end && *key_beg != ';')
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key_beg++;
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key_beg++;
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continue;
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}
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else
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{
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/* Find equals sign. */
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eq = key_beg + key_len;
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while (eq < end && c_isspace (*eq))
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eq++;
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if (eq == end)
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return false;
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if (*eq != '=')
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{
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key_beg++;
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continue;
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}
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val_beg = eq + 1;
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while (val_beg < end && c_isspace (*val_beg))
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val_beg++;
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if (val_beg == end)
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return false;
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val_end = val_beg + 1;
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while (val_end < end && *val_end != ';' && !c_isspace (*val_end))
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val_end++;
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*value = xstrndup (val_beg, val_end - val_beg);
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return true;
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}
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}
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*value = NULL;
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return false;
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}
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/* This is to check if given token exists in HTTP header. Tokens are
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separated by ';'. */
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static bool
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has_key (const char *start, const char *end, const char *key)
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{
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const char *pos; /* Here would the token start. */
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size_t key_len = strlen (key);
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pos = start;
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while (pos + key_len <= end)
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{
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/* Skip whitespaces at beginning. */
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while (pos + key_len <= end && c_isspace (*pos))
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pos++;
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/* Does the prefix of pos match our key? */
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if (strncmp (key, pos, key_len))
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{
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/* This was not a match.
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Skip all characters until beginning of next token. */
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while (pos + key_len <= end && *pos != ';')
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pos++;
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pos++;
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continue;
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}
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/* key is prefix of pos. Is it the exact token or just a prefix? */
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pos += key_len;
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while (pos < end && c_isspace (*pos))
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pos++;
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if (pos == end || *pos == ';')
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return true;
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/* This was not a match (just a prefix).
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Skip all characters until beginning of next token. */
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while (pos + key_len <= end && *pos != ';')
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pos++;
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pos++;
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}
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return false;
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}
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/* Find all key=value pairs delimited with ';' or ','. This is intended for
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Digest header parsing.
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The usage is:
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const char *pos;
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for (pos = header_beg; pos = find_key_values (pos, header_end, &key, &val); pos++)
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{
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...
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}
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*/
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static const char *
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find_key_values (const char *start, const char *end, char **key, char **value)
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{
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const char *key_start, *key_end;
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const char *eq;
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const char *val_start, *val_end;
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eq = start;
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while (eq < end && *eq != '=')
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{
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/* Skip tokens without =value part. */
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if (*eq == ';' || *eq == ',')
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start = eq + 1;
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eq++;
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}
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if (eq >= end)
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return NULL;
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key_start = start;
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while (key_start < eq && c_isspace (*key_start))
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key_start++;
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key_end = eq - 1;
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while (key_end > key_start && c_isspace (*key_end))
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key_end--;
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key_end++;
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val_start = eq + 1;
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while (val_start < end && c_isspace (*val_start))
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val_start++;
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val_end = val_start;
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while (val_end < end && *val_end != ';' &&
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*val_end != ',' && !c_isspace (*val_end))
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val_end++;
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*key = xstrndup (key_start, key_end - key_start);
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*value = xstrndup (val_start, val_end - val_start);
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/* Skip trailing whitespaces. */
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while (val_end < end && c_isspace (*val_end))
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val_end++;
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return val_end;
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}
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/* Will return proper metalink_t structure if enough data was found in
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http response resp. Otherwise returns NULL.
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Two exit points: one for success and one for failure. */
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@ -4999,131 +4807,6 @@ ensure_extension (struct http_stat *hs, const char *ext, int *dt)
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}
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#ifdef TESTING
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const char *
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test_find_key_values (void)
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{
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static const char *header_data = "key1=val1;key2=val2 ;key3=val3; key4=val4"\
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" ; key5=val5;key6 =val6;key7= val7; "\
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"key8 = val8 ; key9 = val9 "\
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" ,key10= val10,key11,key12=val12";
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static const struct
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{
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const char *key;
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const char *val;
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} test_array[] =
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{
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{ "key1", "val1" },
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{ "key2", "val2" },
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{ "key3", "val3" },
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{ "key4", "val4" },
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{ "key5", "val5" },
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{ "key6", "val6" },
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{ "key7", "val7" },
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{ "key8", "val8" },
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{ "key9", "val9" },
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{ "key10", "val10" },
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{ "key12", "val12" }
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};
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const char *pos;
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char *key, *value;
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size_t i = 0;
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for (pos = header_data; (pos = find_key_values (pos,
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header_data + strlen (header_data),
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&key, &value)); pos++)
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{
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mu_assert ("test_find_key_values: wrong result",
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!strcmp (test_array[i].val, value) &&
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!strcmp (test_array[i].key, key));
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xfree (key);
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xfree (value);
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i++;
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}
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return NULL;
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}
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const char *
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test_find_key_value (void)
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{
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static const char *header_data = "key1=val1;key2=val2 ;key3=val3; key4=val4"\
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" ; key5=val5;key6 =val6;key7= val7; "\
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"key8 = val8 ; key9 = val9 ";
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static const struct
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{
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const char *key;
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const char *val;
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bool result;
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} test_array[] =
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{
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{ "key1", "val1", true },
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{ "key2", "val2", true },
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{ "key3", "val3", true },
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{ "key4", "val4", true },
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{ "key5", "val5", true },
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{ "key6", "val6", true },
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{ "key7", "val7", true },
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{ "key8", "val8", true },
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{ "key9", "val9", true },
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{ "key10", NULL, false },
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{ "ey1", NULL, false },
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{ "dey1", NULL, false }
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};
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size_t i;
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for (i=0; i < countof (test_array); ++i)
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{
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bool result;
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char *value;
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result = find_key_value (header_data,
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header_data + strlen(header_data),
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test_array[i].key, &value);
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mu_assert ("test_find_key_value: wrong result",
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result == test_array[i].result &&
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((!test_array[i].result && !value) ||
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!strcmp (value, test_array[i].val)));
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xfree (value);
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}
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return NULL;
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}
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const char *
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test_has_key (void)
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{
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static const char *header_data = "key1=val2;token1;xyz; token2;xyz;token3 ;"\
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"xyz; token4 ;xyz; token5 ";
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struct
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{
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const char *token;
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bool result;
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} test_array[] =
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{
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{ "key1=val2", true },
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{ "token1", true },
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{ "token2", true },
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{ "token3", true },
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{ "token4", true },
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{ "token5", true },
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{ "token6", false },
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{ "oken1", false },
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{ "poken1", false },
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{ "key1=val2", true }
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};
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size_t i;
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for (i = 0; i < countof (test_array); ++i)
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mu_assert ("test_has_key: wrong result",
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has_key (header_data, header_data + strlen (header_data),
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test_array[i].token) == test_array[i].result);
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return NULL;
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}
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const char *
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test_parse_content_disposition(void)
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{
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322
src/metalink.c
322
src/metalink.c
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@ -35,6 +35,7 @@ as that of the covered work. */
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#include "exits.h"
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#include "utils.h"
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#include "sha256.h"
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#include "xstrndup.h"
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#include <sys/errno.h>
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#include <unistd.h> /* For unlink. */
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#include <metalink/metalink_parser.h>
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@ -43,6 +44,10 @@ as that of the covered work. */
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#include <fcntl.h> /* For open and close. */
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#endif
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#ifdef TESTING
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#include "test.h"
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#endif
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/* Loop through all files in metalink structure and retrieve them.
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Returns RETROK if all files were downloaded.
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Returns last retrieval error (from retrieve_url) if some files
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@ -445,4 +450,321 @@ int metalink_res_cmp (const void* v1, const void* v2)
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return 0;
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}
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/*
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Find value of given key. This is intended for Link header, but will
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work with any header that uses ';' as field separator and '=' as key-value
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separator.
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Link = "Link" ":" #link-value
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link-value = "<" URI-Reference ">" *( ";" link-param )
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link-param = ( ( "rel" "=" relation-types )
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| ( "anchor" "=" <"> URI-Reference <"> )
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| ( "rev" "=" relation-types )
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| ( "hreflang" "=" Language-Tag )
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| ( "media" "=" ( MediaDesc | ( <"> MediaDesc <"> ) ) )
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| ( "title" "=" quoted-string )
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| ( "title*" "=" ext-value )
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| ( "type" "=" ( media-type | quoted-mt ) )
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| ( link-extension ) )
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link-extension = ( parmname [ "=" ( ptoken | quoted-string ) ] )
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| ( ext-name-star "=" ext-value )
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ext-name-star = parmname "*" ; reserved for RFC2231-profiled
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; extensions. Whitespace NOT
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; allowed in between.
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ptoken = 1*ptokenchar
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ptokenchar = "!" | "#" | "$" | "%" | "&" | "'" | "("
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| ")" | "*" | "+" | "-" | "." | "/" | DIGIT
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| ":" | "<" | "=" | ">" | "?" | "@" | ALPHA
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| "[" | "]" | "^" | "_" | "`" | "{" | "|"
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| "}" | "~"
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media-type = type-name "/" subtype-name
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quoted-mt = <"> media-type <">
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relation-types = relation-type
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| <"> relation-type *( 1*SP relation-type ) <">
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relation-type = reg-rel-type | ext-rel-type
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reg-rel-type = LOALPHA *( LOALPHA | DIGIT | "." | "-" )
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ext-rel-type = URI
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See more: rfc5988
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*/
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bool
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find_key_value (const char *start, const char *end, const char *key, char **value)
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{
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const char *eq;
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size_t key_len = strlen (key);
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const char *val_beg, *val_end;
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const char *key_beg;
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key_beg = start;
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while (key_beg + key_len + 1 < end)
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{
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/* Skip whitespaces. */
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while (key_beg + key_len + 1 < end && c_isspace (*key_beg))
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key_beg++;
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if (strncmp (key_beg, key, key_len))
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{
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/* Find next token. */
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while (key_beg + key_len + 1 < end && *key_beg != ';')
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key_beg++;
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key_beg++;
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continue;
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}
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else
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{
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/* Find equals sign. */
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eq = key_beg + key_len;
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while (eq < end && c_isspace (*eq))
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eq++;
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if (eq == end)
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return false;
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if (*eq != '=')
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{
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key_beg++;
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continue;
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}
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val_beg = eq + 1;
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while (val_beg < end && c_isspace (*val_beg))
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val_beg++;
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if (val_beg == end)
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return false;
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val_end = val_beg + 1;
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while (val_end < end && *val_end != ';' && !c_isspace (*val_end))
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val_end++;
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*value = xstrndup (val_beg, val_end - val_beg);
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return true;
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}
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}
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*value = NULL;
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return false;
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}
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/* This is to check if given token exists in HTTP header. Tokens are
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separated by ';'. */
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bool
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has_key (const char *start, const char *end, const char *key)
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{
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const char *pos; /* Here would the token start. */
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size_t key_len = strlen (key);
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pos = start;
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while (pos + key_len <= end)
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{
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/* Skip whitespaces at beginning. */
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while (pos + key_len <= end && c_isspace (*pos))
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pos++;
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/* Does the prefix of pos match our key? */
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if (strncmp (key, pos, key_len))
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{
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/* This was not a match.
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Skip all characters until beginning of next token. */
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while (pos + key_len <= end && *pos != ';')
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pos++;
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pos++;
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continue;
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}
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/* key is prefix of pos. Is it the exact token or just a prefix? */
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pos += key_len;
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while (pos < end && c_isspace (*pos))
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pos++;
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if (pos == end || *pos == ';')
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return true;
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/* This was not a match (just a prefix).
|
||||
Skip all characters until beginning of next token. */
|
||||
while (pos + key_len <= end && *pos != ';')
|
||||
pos++;
|
||||
pos++;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Find all key=value pairs delimited with ';' or ','. This is intended for
|
||||
Digest header parsing.
|
||||
The usage is:
|
||||
|
||||
const char *pos;
|
||||
for (pos = header_beg; pos = find_key_values (pos, header_end, &key, &val); pos++)
|
||||
{
|
||||
...
|
||||
}
|
||||
|
||||
*/
|
||||
const char *
|
||||
find_key_values (const char *start, const char *end, char **key, char **value)
|
||||
{
|
||||
const char *key_start, *key_end;
|
||||
const char *eq;
|
||||
const char *val_start, *val_end;
|
||||
|
||||
eq = start;
|
||||
while (eq < end && *eq != '=')
|
||||
{
|
||||
/* Skip tokens without =value part. */
|
||||
if (*eq == ';' || *eq == ',')
|
||||
start = eq + 1;
|
||||
eq++;
|
||||
}
|
||||
|
||||
if (eq >= end)
|
||||
return NULL;
|
||||
|
||||
key_start = start;
|
||||
while (key_start < eq && c_isspace (*key_start))
|
||||
key_start++;
|
||||
|
||||
key_end = eq - 1;
|
||||
while (key_end > key_start && c_isspace (*key_end))
|
||||
key_end--;
|
||||
key_end++;
|
||||
|
||||
val_start = eq + 1;
|
||||
while (val_start < end && c_isspace (*val_start))
|
||||
val_start++;
|
||||
|
||||
val_end = val_start;
|
||||
|
||||
while (val_end < end && *val_end != ';' &&
|
||||
*val_end != ',' && !c_isspace (*val_end))
|
||||
val_end++;
|
||||
|
||||
*key = xstrndup (key_start, key_end - key_start);
|
||||
*value = xstrndup (val_start, val_end - val_start);
|
||||
|
||||
/* Skip trailing whitespaces. */
|
||||
while (val_end < end && c_isspace (*val_end))
|
||||
val_end++;
|
||||
|
||||
return val_end;
|
||||
}
|
||||
|
||||
#ifdef TESTING
|
||||
const char *
|
||||
test_find_key_values (void)
|
||||
{
|
||||
static const char *header_data = "key1=val1;key2=val2 ;key3=val3; key4=val4"\
|
||||
" ; key5=val5;key6 =val6;key7= val7; "\
|
||||
"key8 = val8 ; key9 = val9 "\
|
||||
" ,key10= val10,key11,key12=val12";
|
||||
static const struct
|
||||
{
|
||||
const char *key;
|
||||
const char *val;
|
||||
} test_array[] =
|
||||
{
|
||||
{ "key1", "val1" },
|
||||
{ "key2", "val2" },
|
||||
{ "key3", "val3" },
|
||||
{ "key4", "val4" },
|
||||
{ "key5", "val5" },
|
||||
{ "key6", "val6" },
|
||||
{ "key7", "val7" },
|
||||
{ "key8", "val8" },
|
||||
{ "key9", "val9" },
|
||||
{ "key10", "val10" },
|
||||
{ "key12", "val12" }
|
||||
};
|
||||
const char *pos;
|
||||
char *key, *value;
|
||||
size_t i = 0;
|
||||
|
||||
for (pos = header_data; (pos = find_key_values (pos,
|
||||
header_data + strlen (header_data),
|
||||
&key, &value)); pos++)
|
||||
{
|
||||
mu_assert ("test_find_key_values: wrong result",
|
||||
!strcmp (test_array[i].val, value) &&
|
||||
!strcmp (test_array[i].key, key));
|
||||
xfree (key);
|
||||
xfree (value);
|
||||
i++;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
const char *
|
||||
test_find_key_value (void)
|
||||
{
|
||||
static const char *header_data = "key1=val1;key2=val2 ;key3=val3; key4=val4"\
|
||||
" ; key5=val5;key6 =val6;key7= val7; "\
|
||||
"key8 = val8 ; key9 = val9 ";
|
||||
static const struct
|
||||
{
|
||||
const char *key;
|
||||
const char *val;
|
||||
bool result;
|
||||
} test_array[] =
|
||||
{
|
||||
{ "key1", "val1", true },
|
||||
{ "key2", "val2", true },
|
||||
{ "key3", "val3", true },
|
||||
{ "key4", "val4", true },
|
||||
{ "key5", "val5", true },
|
||||
{ "key6", "val6", true },
|
||||
{ "key7", "val7", true },
|
||||
{ "key8", "val8", true },
|
||||
{ "key9", "val9", true },
|
||||
{ "key10", NULL, false },
|
||||
{ "ey1", NULL, false },
|
||||
{ "dey1", NULL, false }
|
||||
};
|
||||
size_t i;
|
||||
|
||||
for (i=0; i < countof (test_array); ++i)
|
||||
{
|
||||
bool result;
|
||||
char *value;
|
||||
|
||||
result = find_key_value (header_data,
|
||||
header_data + strlen(header_data),
|
||||
test_array[i].key, &value);
|
||||
|
||||
mu_assert ("test_find_key_value: wrong result",
|
||||
result == test_array[i].result &&
|
||||
((!test_array[i].result && !value) ||
|
||||
!strcmp (value, test_array[i].val)));
|
||||
|
||||
xfree (value);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
const char *
|
||||
test_has_key (void)
|
||||
{
|
||||
static const char *header_data = "key1=val2;token1;xyz; token2;xyz;token3 ;"\
|
||||
"xyz; token4 ;xyz; token5 ";
|
||||
struct
|
||||
{
|
||||
const char *token;
|
||||
bool result;
|
||||
} test_array[] =
|
||||
{
|
||||
{ "key1=val2", true },
|
||||
{ "token1", true },
|
||||
{ "token2", true },
|
||||
{ "token3", true },
|
||||
{ "token4", true },
|
||||
{ "token5", true },
|
||||
{ "token6", false },
|
||||
{ "oken1", false },
|
||||
{ "poken1", false },
|
||||
{ "key1=val2", true }
|
||||
};
|
||||
size_t i;
|
||||
|
||||
for (i = 0; i < countof (test_array); ++i)
|
||||
mu_assert ("test_has_key: wrong result",
|
||||
has_key (header_data, header_data + strlen (header_data),
|
||||
test_array[i].token) == test_array[i].result);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* HAVE_METALINK */
|
||||
|
|
|
|||
|
|
@ -47,4 +47,14 @@ uerr_t retrieve_from_metalink (const metalink_t *metalink);
|
|||
|
||||
int metalink_res_cmp (const void *res1, const void *res2);
|
||||
|
||||
bool find_key_value (const char *start,
|
||||
const char *end,
|
||||
const char *key,
|
||||
char **value);
|
||||
bool has_key (const char *start, const char *end, const char *key);
|
||||
const char *find_key_values (const char *start,
|
||||
const char *end,
|
||||
char **key,
|
||||
char **value);
|
||||
|
||||
#endif /* METALINK_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue