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grub2/0074-Add-a-url-parser.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 14 Jun 2016 16:18:44 -0400
Subject: [PATCH] Add a url parser.
This patch adds a url parser that can parse http, https, tftp, and tftps
urls, and is easily extensible to handle more types.
It's a little ugly in terms of the arguments it takes.
Signed-off-by: Peter Jones <pjones@redhat.com>
---
grub-core/Makefile.core.def | 1 +
grub-core/kern/misc.c | 13 +
grub-core/net/url.c | 861 ++++++++++++++++++++++++++++++++++++++++++++
include/grub/misc.h | 45 +++
include/grub/net/url.h | 28 ++
5 files changed, 948 insertions(+)
create mode 100644 grub-core/net/url.c
create mode 100644 include/grub/net/url.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index cd0902b46..991891a6e 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2185,6 +2185,7 @@ module = {
common = net/ethernet.c;
common = net/arp.c;
common = net/netbuff.c;
+ common = net/url.c;
};
module = {
diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c
index 8344526be..f1fab7000 100644
--- a/grub-core/kern/misc.c
+++ b/grub-core/kern/misc.c
@@ -296,6 +296,19 @@ grub_strrchr (const char *s, int c)
return p;
}
+char *
+grub_strchrnul (const char *s, int c)
+{
+ do
+ {
+ if (*s == c)
+ break;
+ }
+ while (*s++);
+
+ return (char *) s;
+}
+
int
grub_strword (const char *haystack, const char *needle)
{
diff --git a/grub-core/net/url.c b/grub-core/net/url.c
new file mode 100644
index 000000000..146858284
--- /dev/null
+++ b/grub-core/net/url.c
@@ -0,0 +1,861 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2016 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef URL_TEST
+
+#define _GNU_SOURCE 1
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define N_(x) x
+
+#define grub_malloc(x) malloc(x)
+#define grub_free(x) ({if (x) free(x);})
+#define grub_error(a, fmt, args...) printf(fmt "\n", ## args)
+#define grub_dprintf(a, fmt, args...) printf(a ": " fmt, ## args)
+#define grub_strlen(x) strlen(x)
+#define grub_strdup(x) strdup(x)
+#define grub_strstr(x,y) strstr(x,y)
+#define grub_memcpy(x,y,z) memcpy(x,y,z)
+#define grub_strcmp(x,y) strcmp(x,y)
+#define grub_strncmp(x,y,z) strncmp(x,y,z)
+#define grub_strcasecmp(x,y) strcasecmp(x,y)
+#define grub_strchrnul(x,y) strchrnul(x,y)
+#define grub_strchr(x,y) strchr(x,y)
+#define grub_strndup(x,y) strndup(x,y)
+#define grub_strtoul(x,y,z) strtoul(x,y,z)
+#define grub_memmove(x,y,z) memmove(x,y,z)
+#define grub_size_t size_t
+#define grub_errno errno
+
+#else
+#include <grub/types.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/net/url.h>
+#endif
+
+static char *
+translate_slashes(char *str)
+{
+ int i, j;
+ if (str == NULL)
+ return str;
+
+ for (i = 0, j = 0; str[i] != '\0'; i++, j++)
+ {
+ if (str[i] == '\\')
+ {
+ str[j] = '/';
+ if (str[i+1] == '\\')
+ i++;
+ }
+ }
+
+ return str;
+}
+
+static inline int
+hex2int (char c)
+{
+ if (c >= '0' && c <= '9')
+ return c - '0';
+ c |= 0x20;
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ return -1;
+}
+
+static int
+url_unescape (char *buf, grub_size_t len)
+{
+ int c, rc;
+ unsigned int i;
+
+
+ if (len < 3)
+ {
+ for (i = 0; i < len; i++)
+ if (buf[i] == '%')
+ return -1;
+ return 0;
+ }
+
+ for (i = 0; len > 2 && i < len - 2; i++)
+ {
+ if (buf[i] == '%')
+ {
+ unsigned int j;
+ for (j = i+1; j < i+3; j++)
+ {
+ if (!(buf[j] >= '0' && buf[j] <= '9') &&
+ !(buf[j] >= 'a' && buf[j] <= 'f') &&
+ !(buf[j] >= 'A' && buf[j] <= 'F'))
+ return -1;
+ }
+ i += 2;
+ }
+ }
+ if (i == len - 2)
+ {
+ if (buf[i+1] == '%' || buf[i+2] == '%')
+ return -1;
+ }
+ for (i = 0; i < len - 2; i++)
+ {
+ if (buf[i] == '%')
+ {
+ rc = hex2int (buf[i+1]);
+ if (rc < 0)
+ return -1;
+ c = (rc & 0xf) << 4;
+ rc = hex2int (buf[i+2]);
+ if (rc < 0)
+ return -1;
+ c |= (rc & 0xf);
+
+ buf[i] = c;
+ grub_memmove (buf+i+1, buf+i+3, len-(i+2));
+ len -= 2;
+ }
+ }
+ return 0;
+}
+
+static int
+extract_http_url_info (char *url, int ssl,
+ char **userinfo, char **host, int *port,
+ char **file)
+{
+ char *colon, *slash, *query, *at = NULL, *separator, *auth_end;
+
+ char *userinfo_off = NULL;
+ char *userinfo_end;
+ char *host_off = NULL;
+ char *host_end;
+ char *port_off = NULL;
+ char *port_end;
+ char *file_off = NULL;
+
+ grub_size_t l;
+ int c;
+
+ if (!url || !userinfo || !host || !port || !file)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid argument");
+
+ *userinfo = *host = *file = NULL;
+ *port = -1;
+
+ userinfo_off = url;
+
+ slash = grub_strchrnul (userinfo_off, '/');
+ query = grub_strchrnul (userinfo_off, '?');
+ auth_end = slash < query ? slash : query;
+ /* auth_end here is one /past/ the last character in the auth section, i.e.
+ * it's the : or / or NUL */
+
+ separator = grub_strchrnul (userinfo_off, '@');
+ if (separator > auth_end)
+ {
+ host_off = userinfo_off;
+ userinfo_off = NULL;
+ userinfo_end = NULL;
+ }
+ else
+ {
+ at = separator;
+ *separator = '\0';
+ userinfo_end = separator;
+ host_off = separator + 1;
+ }
+
+ if (*host_off == '[')
+ {
+ separator = grub_strchrnul (host_off, ']');
+ if (separator >= auth_end)
+ goto fail;
+
+ separator += 1;
+ host_end = separator;
+ }
+ else
+ {
+ host_end = separator = colon = grub_strchrnul (host_off, ':');
+
+ if (colon > auth_end)
+ {
+ separator = NULL;
+ host_end = auth_end;
+ }
+ }
+
+ if (separator && separator < auth_end)
+ {
+ if (*separator == ':')
+ {
+ port_off = separator + 1;
+ port_end = auth_end;
+
+ if (auth_end - port_end > 0)
+ goto fail;
+ if (port_end - port_off < 1)
+ goto fail;
+ }
+ else
+ goto fail;
+ }
+
+ file_off = auth_end;
+ if (port_off)
+ {
+ unsigned long portul;
+
+ separator = NULL;
+ c = *port_end;
+ *port_end = '\0';
+
+ portul = grub_strtoul (port_off, &separator, 10);
+ *port_end = c;
+#ifdef URL_TEST
+ if (portul == ULONG_MAX && errno == ERANGE)
+ goto fail;
+#else
+ if (grub_errno == GRUB_ERR_OUT_OF_RANGE)
+ goto fail;
+#endif
+ if (portul & ~0xfffful)
+ goto fail;
+ if (separator != port_end)
+ goto fail;
+
+ *port = portul & 0xfffful;
+ }
+ else if (ssl)
+ *port = 443;
+ else
+ *port = 80;
+
+ if (userinfo_off && *userinfo_off)
+ {
+ l = userinfo_end - userinfo_off + 1;
+
+ *userinfo = grub_strndup (userinfo_off, l);
+ if (!*userinfo)
+ goto fail;
+ (*userinfo)[l-1]= '\0';
+ }
+
+ l = host_end - host_off;
+
+ if (host_end == NULL)
+ goto fail;
+ else
+ c = *host_end;
+
+ *host_end = '\0';
+ *host = grub_strndup (host_off, l);
+ *host_end = c;
+ if (!*host)
+ goto fail;
+ (*host)[l] = '\0';
+
+ *file = grub_strdup (file_off);
+ if (!*file)
+ goto fail;
+
+ if (at)
+ *at = '@';
+ return 0;
+fail:
+ if (at)
+ *at = '@';
+ grub_free (*userinfo);
+ grub_free (*host);
+ grub_free (*file);
+
+ return -1;
+}
+
+static int
+extract_tftp_url_info (char *url, int ssl, char **host, char **file, int *port)
+{
+ char *slash, *semi;
+
+ char *host_off = url;
+ char *host_end;
+ char *file_off;
+
+ int c;
+
+ if (!url || !host || !file || !port)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid argument");
+
+ if (ssl)
+ *port = 3713;
+ else
+ *port = 69;
+
+ slash = grub_strchr (url, '/');
+ if (!slash)
+ return -1;
+
+ host_end = file_off = slash;
+
+ semi = grub_strchrnul (slash, ';');
+ if (!grub_strncmp (semi, ";mode=", 6) && grub_strcmp (semi+6, "octet"))
+ {
+ grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("TFTP mode `%s' is not implemented."), semi+6);
+ return -1;
+ }
+
+ /*
+ * Maybe somebody added a new method, I dunno. Anyway, semi is a reserved
+ * character, so if it's there, it's the start of the mode block or it's
+ * invalid. So set it to \0 unconditionally, not just for ;mode=octet
+ */
+ *semi = '\0';
+
+ c = *host_end;
+ *host_end = '\0';
+ *host = grub_strdup (host_off);
+ *host_end = c;
+
+ *file = grub_strdup (file_off);
+
+ if (!*file || !*host)
+ {
+ grub_free (*file);
+ grub_free (*host);
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+extract_url_info (const char *urlbuf, grub_size_t buflen,
+ char **scheme, char **userinfo,
+ char **host, int *port, char **file)
+{
+ char *url;
+ char *colon;
+
+ char *scheme_off;
+ char *specific_off;
+
+ int rc;
+ int c;
+
+ int https;
+
+ if (!urlbuf || !buflen || !scheme || !userinfo || !host || !port || !file)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid argument");
+
+ *scheme = *userinfo = *host = *file = NULL;
+ *port = -1;
+
+ /* make sure we have our own coherent grub_string. */
+ url = grub_malloc (buflen + 1);
+ if (!url)
+ return -1;
+
+ grub_memcpy (url, urlbuf, buflen);
+ url[buflen] = '\0';
+
+ grub_dprintf ("net", "dhcpv6 boot-file-url: `%s'\n", url);
+
+ /* get rid of any backslashes */
+ url = translate_slashes (url);
+
+ /* find the constituent parts */
+ colon = grub_strstr (url, "://");
+ if (!colon)
+ goto fail;
+
+ scheme_off = url;
+ c = *colon;
+ *colon = '\0';
+ specific_off = colon + 3;
+
+ https = !grub_strcasecmp (scheme_off, "https");
+
+ rc = 0;
+ if (!grub_strcasecmp (scheme_off, "tftp"))
+ {
+ rc = extract_tftp_url_info (specific_off, 0, host, file, port);
+ }
+#ifdef URL_TEST
+ else if (!grub_strcasecmp (scheme_off, "http") || https)
+#else
+ else if (!grub_strcasecmp (scheme_off, "http"))
+#endif
+ {
+ rc = extract_http_url_info (specific_off,
+ https, userinfo, host, port, file);
+ }
+#ifdef URL_TEST
+ else if (!grub_strcasecmp (scheme_off, "iscsi"))
+ {
+ grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("Unimplemented URL scheme `%s'"), scheme_off);
+ *colon = c;
+ goto fail;
+ }
+ else if (!grub_strcasecmp (scheme_off, "tftps"))
+ {
+ rc = extract_tftp_url_info (specific_off, 1, host, file, port);
+ }
+#endif
+ else
+ {
+ grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("Unimplemented URL scheme `%s'"), scheme_off);
+ *colon = c;
+ goto fail;
+ }
+
+ if (rc < 0)
+ {
+ *colon = c;
+ goto fail;
+ }
+
+ *scheme = grub_strdup (scheme_off);
+ *colon = c;
+ if (!*scheme)
+ goto fail;
+
+ if (*userinfo)
+ {
+ rc = url_unescape (*userinfo, grub_strlen (*userinfo));
+ if (rc < 0)
+ goto fail;
+ }
+
+ if (*host)
+ {
+ rc = url_unescape (*host, grub_strlen (*host));
+ if (rc < 0)
+ goto fail;
+ }
+
+ if (*file)
+ {
+ rc = url_unescape (*file, grub_strlen (*file));
+ if (rc < 0)
+ goto fail;
+ }
+
+ grub_free (url);
+ return 0;
+fail:
+ grub_free (*scheme);
+ grub_free (*userinfo);
+ grub_free (*host);
+ grub_free (*file);
+
+ if (!grub_errno)
+ grub_error (GRUB_ERR_NET_BAD_ADDRESS, N_("Invalid boot-file-url `%s'"),
+ url);
+ grub_free (url);
+ return -1;
+}
+
+#ifdef URL_TEST
+
+struct test {
+ char *url;
+ int rc;
+ char *scheme;
+ char *userinfo;
+ char *host;
+ int port;
+ char *file;
+} tests[] = {
+ {.url = "http://foo.example.com/",
+ .rc = 0,
+ .scheme = "http",
+ .host = "foo.example.com",
+ .port = 80,
+ .file = "/",
+ },
+ {.url = "http://foo.example.com/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .host = "foo.example.com",
+ .port = 80,
+ .file = "/?foobar",
+ },
+ {.url = "http://[foo.example.com/",
+ .rc = -1,
+ },
+ {.url = "http://[foo.example.com/?foobar",
+ .rc = -1,
+ },
+ {.url = "http://foo.example.com:/",
+ .rc = -1,
+ },
+ {.url = "http://foo.example.com:81/",
+ .rc = 0,
+ .scheme = "http",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "http://foo.example.com:81/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "http://[1234::1]/",
+ .rc = 0,
+ .scheme = "http",
+ .host = "[1234::1]",
+ .port = 80,
+ .file = "/",
+ },
+ {.url = "http://[1234::1]/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .host = "[1234::1]",
+ .port = 80,
+ .file = "/?foobar",
+ },
+ {.url = "http://[1234::1]:81/",
+ .rc = 0,
+ .scheme = "http",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "http://[1234::1]:81/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "http://foo@foo.example.com/",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 80,
+ .file = "/",
+ },
+ {.url = "http://foo@foo.example.com/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 80,
+ .file = "/?foobar",
+ },
+ {.url = "http://foo@[foo.example.com/",
+ .rc = -1,
+ },
+ {.url = "http://foo@[foo.example.com/?foobar",
+ .rc = -1,
+ },
+ {.url = "http://foo@foo.example.com:81/",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "http://foo@foo.example.com:81/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "http://foo@[1234::1]/",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 80,
+ .file = "/",
+ },
+ {.url = "http://foo@[1234::1]/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 80,
+ .file = "/?foobar",
+ },
+ {.url = "http://foo@[1234::1]:81/",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "http://foo@[1234::1]:81/?foobar",
+ .rc = 0,
+ .scheme = "http",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "https://foo.example.com/",
+ .rc = 0,
+ .scheme = "https",
+ .host = "foo.example.com",
+ .port = 443,
+ .file = "/",
+ },
+ {.url = "https://foo.example.com/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .host = "foo.example.com",
+ .port = 443,
+ .file = "/?foobar",
+ },
+ {.url = "https://[foo.example.com/",
+ .rc = -1,
+ },
+ {.url = "https://[foo.example.com/?foobar",
+ .rc = -1,
+ },
+ {.url = "https://foo.example.com:81/",
+ .rc = 0,
+ .scheme = "https",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "https://foo.example.com:81/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "https://[1234::1]/",
+ .rc = 0,
+ .scheme = "https",
+ .host = "[1234::1]",
+ .port = 443,
+ .file = "/",
+ },
+ {.url = "https://[1234::1]/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .host = "[1234::1]",
+ .port = 443,
+ .file = "/?foobar",
+ },
+ {.url = "https://[1234::1]:81/",
+ .rc = 0,
+ .scheme = "https",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "https://[1234::1]:81/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "https://foo@foo.example.com/",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 443,
+ .file = "/",
+ },
+ {.url = "https://foo@foo.example.com/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 443,
+ .file = "/?foobar",
+ },
+ {.url = "https://foo@[foo.example.com/",
+ .rc = -1,
+ },
+ {.url = "https://f%6fo@[foo.example.com/?fooba%72",
+ .rc = -1,
+ },
+ {.url = "https://foo@foo.example.com:81/",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "https://foo@foo.example.com:81/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "foo.example.com",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "https://foo@[1234::1]/",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 443,
+ .file = "/",
+ },
+ {.url = "https://foo@[1234::1]/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 443,
+ .file = "/?foobar",
+ },
+ {.url = "https://f%6fo@[12%334::1]:81/",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/",
+ },
+ {.url = "https://foo@[1234::1]:81/?foobar",
+ .rc = 0,
+ .scheme = "https",
+ .userinfo = "foo",
+ .host = "[1234::1]",
+ .port = 81,
+ .file = "/?foobar",
+ },
+ {.url = "tftp://foo.e%78ample.com/foo/bar/b%61%7a",
+ .rc = 0,
+ .scheme = "tftp",
+ .host = "foo.example.com",
+ .port = 69,
+ .file = "/foo/bar/baz",
+ },
+ {.url = "tftp://foo.example.com/foo/bar/baz",
+ .rc = 0,
+ .scheme = "tftp",
+ .host = "foo.example.com",
+ .port = 69,
+ .file = "/foo/bar/baz",
+ },
+ {.url = "tftps://foo.example.com/foo/bar/baz",
+ .rc = 0,
+ .scheme = "tftps",
+ .host = "foo.example.com",
+ .port = 3713,
+ .file = "/foo/bar/baz",
+ },
+ {.url = "tftps://foo.example.com/foo/bar/baz;mode=netascii",
+ .rc = -1,
+ },
+ {.url = "tftps://foo.example.com/foo/bar/baz;mode=octet",
+ .rc = 0,
+ .scheme = "tftps",
+ .host = "foo.example.com",
+ .port = 3713,
+ .file = "/foo/bar/baz",
+ },
+ {.url = "tftps://foo.example.com/foo/bar/baz;mode=invalid",
+ .rc = -1,
+ },
+ {.url = "",
+ },
+};
+
+static int
+string_test (char *name, char *a, char *b)
+{
+ if ((a && !b) || (!a && b))
+ {
+ printf("expected %s \"%s\", got \"%s\"\n", name, a, b);
+ return -1;
+ }
+ if (a && b && strcmp(a, b))
+ {
+ printf("expected %s \"%s\", got \"%s\"\n", name, a, b);
+ return -1;
+ }
+ return 0;
+}
+
+int
+main(void)
+{
+ unsigned int i;
+ int rc;
+
+ for (i = 0; tests[i].url[0] != '\0'; i++)
+ {
+ char *scheme, *userinfo, *host, *file;
+ int port;
+
+ printf("======= url: \"%s\"\n", tests[i].url);
+ rc = extract_url_info(tests[i].url, strlen(tests[i].url) + 1,
+ &scheme, &userinfo, &host, &port, &file);
+ if (tests[i].rc != rc)
+ {
+ printf(" extract_url_info(...) = %d\n", rc);
+ exit(1);
+ }
+ else if (rc >= 0)
+ {
+ if (string_test("scheme", tests[i].scheme, scheme) < 0)
+ exit(1);
+ if (string_test("userinfo", tests[i].userinfo, userinfo) < 0)
+ exit(1);
+ if (string_test("host", tests[i].host, host) < 0)
+ exit(1);
+ if (port != tests[i].port)
+ {
+ printf(" bad port \"%d\" should have been \"%d\"\n",
+ port, tests[i].port);
+ exit(1);
+ }
+ if (string_test("file", tests[i].file, file) < 0)
+ exit(1);
+ }
+ free(scheme);
+ free(userinfo);
+ free(host);
+ free(file);
+ }
+ printf("everything worked?!?\n");
+}
+#endif
diff --git a/include/grub/misc.h b/include/grub/misc.h
index 83fd69f4a..fcaf1201e 100644
--- a/include/grub/misc.h
+++ b/include/grub/misc.h
@@ -85,6 +85,7 @@ int EXPORT_FUNC(grub_strncmp) (const char *s1, const char *s2, grub_size_t n);
char *EXPORT_FUNC(grub_strchr) (const char *s, int c);
char *EXPORT_FUNC(grub_strrchr) (const char *s, int c);
+char *EXPORT_FUNC(grub_strchrnul) (const char *s, int c);
int EXPORT_FUNC(grub_strword) (const char *s, const char *w);
/* Copied from gnulib.
@@ -207,6 +208,50 @@ grub_toupper (int c)
return c;
}
+static inline char *
+grub_strcasestr (const char *haystack, const char *needle)
+{
+ /* Be careful not to look at the entire extent of haystack or needle
+ until needed. This is useful because of these two cases:
+ - haystack may be very long, and a match of needle found early,
+ - needle may be very long, and not even a short initial segment of
+ needle may be found in haystack. */
+ if (*needle != '\0')
+ {
+ /* Speed up the following searches of needle by caching its first
+ character. */
+ char b = *needle++;
+
+ for (;; haystack++)
+ {
+ if (*haystack == '\0')
+ /* No match. */
+ return 0;
+ if (grub_tolower(*haystack) == grub_tolower(b))
+ /* The first character matches. */
+ {
+ const char *rhaystack = haystack + 1;
+ const char *rneedle = needle;
+
+ for (;; rhaystack++, rneedle++)
+ {
+ if (*rneedle == '\0')
+ /* Found a match. */
+ return (char *) haystack;
+ if (*rhaystack == '\0')
+ /* No match. */
+ return 0;
+ if (grub_tolower(*rhaystack) != grub_tolower(*rneedle))
+ /* Nothing in this round. */
+ break;
+ }
+ }
+ }
+ }
+ else
+ return (char *) haystack;
+}
+
static inline int
grub_strcasecmp (const char *s1, const char *s2)
{
diff --git a/include/grub/net/url.h b/include/grub/net/url.h
new file mode 100644
index 000000000..a215fa27d
--- /dev/null
+++ b/include/grub/net/url.h
@@ -0,0 +1,28 @@
+/* url.h - prototypes for url parsing functions */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2016 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_URL_HEADER
+#define GRUB_URL_HEADER 1
+
+int
+EXPORT_FUNC(extract_url_info) (const char *urlbuf, grub_size_t buflen,
+ char **scheme, char **userinfo,
+ char **host, int *port, char **file);
+
+#endif /* GRUB_URL_HEADER */
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