forked from Lainports/opnsense-ports
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
--- path_utils.c.orig 2007-11-20 19:27:58 UTC
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+++ path_utils.c
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@@ -92,3 +92,72 @@ char* get_dir_path(const char* path) {
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return ret;
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}
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+
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+/*
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+ * the chars not needed to be escaped:
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+ * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
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+ */
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+static inline int is_unreserved_rfc3986(char c)
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+{
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+ int is_locase_alpha = (c >= 'a' && c <= 'z');
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+ int is_upcase_alpha = (c >= 'A' && c <= 'Z');
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+ int is_digit = (c >= '0' && c <= '9');
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+ int is_special = c == '-'
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+ || c == '.'
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+ || c == '_'
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+ || c == '~';
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+ int is_unreserved = is_locase_alpha
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+ || is_upcase_alpha
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+ || is_digit
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+ || is_special;
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+
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+ return is_unreserved;
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+}
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+
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+static inline int is_unreserved(char c)
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+{
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+ return is_unreserved_rfc3986(c) || c == '/';
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+}
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+
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+char* path_to_uri(const char* path)
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+{
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+ static const char hex[] = "0123456789ABCDEF";
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+ size_t path_len = strlen(path);
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+ size_t host_len = strlen(ftpfs.host);
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+ /* at worst: c -> %XX */
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+ char * encoded_path = malloc (3 * path_len + 1);
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+ const char * s = path;
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+ char * d = encoded_path;
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+
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+ /*
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+ * 'path' is always prefixed with 'ftpfs.host'
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+ */
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+ memcpy (d, ftpfs.host, host_len);
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+ s += host_len;
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+ d += host_len;
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+
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+ for (; *s; ++s)
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+ {
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+ char c = *s;
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+ if (is_unreserved (c))
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+ {
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+ *d++ = c;
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+ }
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+ else
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+ {
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+ unsigned int hi = ((unsigned)c >> 4) & 0xF;
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+ unsigned int lo = ((unsigned)c >> 0) & 0xF;
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+ *d++ = '%';
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+ *d++ = hex[hi];
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+ *d++ = hex[lo];
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+ }
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+ }
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+ *d = '\0';
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+
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+ return encoded_path;
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+}
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+
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+void free_uri(char* path)
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+{
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+ free(path);
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+}
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