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grub2/0063-Add-a-url-parser.patch
Javier Martinez Canillas 7e98da058f
Cleanup our patchset to reduce the number of patches 
This change reorganizes and cleanups our patches to reduce the patch number
from 314 patches to 187. That's achieved by dropping patches that are later
reverted and squashing fixes for earlier patches that introduced features.

There are no code changes and the diff with upstream is the same before and
after the cleanup. Having fewer patches makes easier to manage the patchset
and also will ease to rebase them on top of the latest grub-2.04 release.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
2019-07-16 12:30:06 +02:00

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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 8bd220a41ba..d0c8a8b1908 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2188,6 +2188,7 @@ 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 2656a670e09..1c560ea570a 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 00000000000..146858284cd
--- /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 83fd69f4ada..fcaf1201e39 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 00000000000..a215fa27d0a
--- /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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