diff options
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | http-backend.c | 59 | ||||
| -rw-r--r-- | transport.c | 51 | ||||
| -rw-r--r-- | url.c | 118 | ||||
| -rw-r--r-- | url.h | 10 |
5 files changed, 134 insertions, 105 deletions
@@ -627,6 +627,7 @@ LIB_OBJS += tree-diff.o LIB_OBJS += tree.o LIB_OBJS += tree-walk.o LIB_OBJS += unpack-trees.o +LIB_OBJS += url.o LIB_OBJS += usage.o LIB_OBJS += userdiff.o LIB_OBJS += utf8.o diff --git a/http-backend.c b/http-backend.c index d1e83d0906..f0e787e37d 100644 --- a/http-backend.c +++ b/http-backend.c @@ -6,6 +6,7 @@ #include "exec_cmd.h" #include "run-command.h" #include "string-list.h" +#include "url.h" static const char content_type[] = "Content-Type"; static const char content_length[] = "Content-Length"; @@ -25,60 +26,6 @@ static struct rpc_service rpc_service[] = { { "receive-pack", "receivepack", -1 }, }; -static int decode_char(const char *q) -{ - int i; - unsigned char val = 0; - for (i = 0; i < 2; i++) { - unsigned char c = *q++; - val <<= 4; - if (c >= '0' && c <= '9') - val += c - '0'; - else if (c >= 'a' && c <= 'f') - val += c - 'a' + 10; - else if (c >= 'A' && c <= 'F') - val += c - 'A' + 10; - else - return -1; - } - return val; -} - -static char *decode_parameter(const char **query, int is_name) -{ - const char *q = *query; - struct strbuf out; - - strbuf_init(&out, 16); - do { - unsigned char c = *q; - - if (!c) - break; - if (c == '&' || (is_name && c == '=')) { - q++; - break; - } - - if (c == '%') { - int val = decode_char(q + 1); - if (0 <= val) { - strbuf_addch(&out, val); - q += 3; - continue; - } - } - - if (c == '+') - strbuf_addch(&out, ' '); - else - strbuf_addch(&out, c); - q++; - } while (1); - *query = q; - return strbuf_detach(&out, NULL); -} - static struct string_list *get_parameters(void) { if (!query_params) { @@ -86,8 +33,8 @@ static struct string_list *get_parameters(void) query_params = xcalloc(1, sizeof(*query_params)); while (query && *query) { - char *name = decode_parameter(&query, 1); - char *value = decode_parameter(&query, 0); + char *name = url_decode_parameter_name(&query); + char *value = url_decode_parameter_value(&query); struct string_list_item *i; i = string_list_lookup(name, query_params); diff --git a/transport.c b/transport.c index 8ce39364a1..4dba6f8815 100644 --- a/transport.c +++ b/transport.c @@ -9,6 +9,7 @@ #include "dir.h" #include "refs.h" #include "branch.h" +#include "url.h" /* rsync support */ @@ -871,54 +872,6 @@ static int is_file(const char *url) return S_ISREG(buf.st_mode); } -static int isurlschemechar(int first_flag, int ch) -{ - /* - * The set of valid URL schemes, as per STD66 (RFC3986) is - * '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check - * of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version - * of check used '[A-Za-z0-9]+' so not to break any remote - * helpers. - */ - int alphanumeric, special; - alphanumeric = ch > 0 && isalnum(ch); - special = ch == '+' || ch == '-' || ch == '.'; - return alphanumeric || (!first_flag && special); -} - -static int is_url(const char *url) -{ - const char *url2, *first_slash; - - if (!url) - return 0; - url2 = url; - first_slash = strchr(url, '/'); - - /* Input with no slash at all or slash first can't be URL. */ - if (!first_slash || first_slash == url) - return 0; - /* Character before must be : and next must be /. */ - if (first_slash[-1] != ':' || first_slash[1] != '/') - return 0; - /* There must be something before the :// */ - if (first_slash == url + 1) - return 0; - /* - * Check all characters up to first slash - 1. Only alphanum - * is allowed. - */ - url2 = url; - while (url2 < first_slash - 1) { - if (!isurlschemechar(url2 == url, (unsigned char)*url2)) - return 0; - url2++; - } - - /* Valid enough. */ - return 1; -} - static int external_specification_len(const char *url) { return strchr(url, ':') - url; @@ -946,7 +899,7 @@ struct transport *transport_get(struct remote *remote, const char *url) if (url) { const char *p = url; - while (isurlschemechar(p == url, *p)) + while (is_urlschemechar(p == url, *p)) p++; if (!prefixcmp(p, "::")) helper = xstrndup(url, p - url); @@ -0,0 +1,118 @@ +#include "cache.h" + +int is_urlschemechar(int first_flag, int ch) +{ + /* + * The set of valid URL schemes, as per STD66 (RFC3986) is + * '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check + * of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version + * of check used '[A-Za-z0-9]+' so not to break any remote + * helpers. + */ + int alphanumeric, special; + alphanumeric = ch > 0 && isalnum(ch); + special = ch == '+' || ch == '-' || ch == '.'; + return alphanumeric || (!first_flag && special); +} + +int is_url(const char *url) +{ + const char *url2, *first_slash; + + if (!url) + return 0; + url2 = url; + first_slash = strchr(url, '/'); + + /* Input with no slash at all or slash first can't be URL. */ + if (!first_slash || first_slash == url) + return 0; + /* Character before must be : and next must be /. */ + if (first_slash[-1] != ':' || first_slash[1] != '/') + return 0; + /* There must be something before the :// */ + if (first_slash == url + 1) + return 0; + /* + * Check all characters up to first slash - 1. Only alphanum + * is allowed. + */ + url2 = url; + while (url2 < first_slash - 1) { + if (!is_urlschemechar(url2 == url, (unsigned char)*url2)) + return 0; + url2++; + } + + /* Valid enough. */ + return 1; +} + +static int url_decode_char(const char *q) +{ + int i; + unsigned char val = 0; + for (i = 0; i < 2; i++) { + unsigned char c = *q++; + val <<= 4; + if (c >= '0' && c <= '9') + val += c - '0'; + else if (c >= 'a' && c <= 'f') + val += c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + val += c - 'A' + 10; + else + return -1; + } + return val; +} + +static char *url_decode_internal(const char **query, const char *stop_at) +{ + const char *q = *query; + struct strbuf out; + + strbuf_init(&out, 16); + do { + unsigned char c = *q; + + if (!c) + break; + if (stop_at && strchr(stop_at, c)) { + q++; + break; + } + + if (c == '%') { + int val = url_decode_char(q + 1); + if (0 <= val) { + strbuf_addch(&out, val); + q += 3; + continue; + } + } + + if (c == '+') + strbuf_addch(&out, ' '); + else + strbuf_addch(&out, c); + q++; + } while (1); + *query = q; + return strbuf_detach(&out, NULL); +} + +char *url_decode(const char *url) +{ + return url_decode_internal(&url, NULL); +} + +char *url_decode_parameter_name(const char **query) +{ + return url_decode_internal(query, "&="); +} + +char *url_decode_parameter_value(const char **query) +{ + return url_decode_internal(query, "&"); +} @@ -0,0 +1,10 @@ +#ifndef URL_H +#define URL_H + +extern int is_url(const char *url); +extern int is_urlschemechar(int first_flag, int ch); +extern char *url_decode(const char *url); +extern char *url_decode_parameter_name(const char **query); +extern char *url_decode_parameter_value(const char **query); + +#endif /* URL_H */ |