[core] add public domain SHA1() if no crypto

add public domain SHA1() if not linking with crypto lib

obtained from https://github.com/nori0428/mod_websocket
 * Originally written by Steve Reid <steve@edmweb.com>
 *
 * Modified by Aaron D. Gifford <agifford@infowest.com>
 *
 * NO COPYRIGHT - THIS IS 100% IN THE PUBLIC DOMAIN
 *
 * The original unmodified version is available at:
 *    ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c

6 files changed, 273 insertions, 10 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 36ce5efa..173c564b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -545,7 +545,7 @@ set(COMMON_SRC
 	http_chunk.c stream.c fdevent.c gw_backend.c
 	stat_cache.c plugin.c joblist.c etag.c array.c
 	data_string.c data_array.c
-	data_integer.c md5.c
+	data_integer.c algo_sha1.c md5.c
 	vector.c
 	fdevent_select.c fdevent_libev.c
 	fdevent_poll.c fdevent_linux_sysepoll.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 892dcf2d..dc12aee9 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -60,7 +60,7 @@ common_src=base64.c buffer.c log.c \
 	http_chunk.c stream.c fdevent.c gw_backend.c \
 	stat_cache.c plugin.c joblist.c etag.c array.c \
 	data_string.c data_array.c \
-	data_integer.c md5.c \
+	data_integer.c algo_sha1.c md5.c \
 	vector.c \
 	fdevent_select.c fdevent_libev.c \
 	fdevent_poll.c fdevent_linux_sysepoll.c \
@@ -374,7 +374,7 @@ mod_uploadprogress_la_LIBADD = $(common_libadd)
 hdr = server.h base64.h buffer.h network.h log.h keyvalue.h \
 	response.h request.h fastcgi.h chunk.h \
 	first.h settings.h http_chunk.h \
-	md5.h http_auth.h http_vhostdb.h stream.h \
+	algo_sha1.h md5.h http_auth.h http_vhostdb.h stream.h \
 	fdevent.h gw_backend.h connections.h base.h stat_cache.h \
 	plugin.h \
 	etag.h joblist.h array.h vector.h crc32.h \
diff --git a/src/SConscript b/src/SConscript
index da81225a..546f7083 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -54,7 +54,7 @@ common_src = Split("base64.c buffer.c log.c \
 	http_chunk.c stream.c fdevent.c gw_backend.c \
 	stat_cache.c plugin.c joblist.c etag.c array.c \
 	data_string.c data_array.c \
-	data_integer.c md5.c \
+	data_integer.c algo_sha1.c md5.c \
 	vector.c \
 	fdevent_select.c fdevent_libev.c \
 	fdevent_poll.c fdevent_linux_sysepoll.c \
diff --git a/src/algo_sha1.c b/src/algo_sha1.c
new file mode 100644
index 00000000..42ca94cf
--- /dev/null
+++ b/src/algo_sha1.c
@@ -0,0 +1,184 @@
+#include "first.h"
+typedef int innocuous_typedef_to_quiet_empty_translation_unit_compiler_warning;
+
+#if defined HAVE_LIBSSL && defined HAVE_OPENSSL_SSL_H
+#define USE_OPENSSL_CRYPTO
+#endif
+
+#ifndef USE_OPENSSL_CRYPTO
+
+#include "sys-endian.h"
+#include "algo_sha1.h"
+
+/*
+ * obtained from https://github.com/nori0428/mod_websocket
+ */
+
+/*
+ * sha1.c
+ *
+ * Originally written by Steve Reid <steve@edmweb.com>
+ *
+ * Modified by Aaron D. Gifford <agifford@infowest.com>
+ *
+ * NO COPYRIGHT - THIS IS 100% IN THE PUBLIC DOMAIN
+ *
+ * The original unmodified version is available at:
+ *    ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+
+#ifdef __LITTLE_ENDIAN__
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&(sha1_quadbyte)0xFF00FF00) \
+    |(rol(block->l[i],8)&(sha1_quadbyte)0x00FF00FF))
+#else
+#define blk0(i) block->l[i]
+#endif
+
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+typedef union _BYTE64QUAD16 {
+    sha1_byte c[64];
+    sha1_quadbyte l[16];
+} BYTE64QUAD16;
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+void SHA1_Transform(sha1_quadbyte state[5], sha1_byte buffer[64]) {
+    sha1_quadbyte a, b, c, d, e;
+    BYTE64QUAD16 src;
+    BYTE64QUAD16 *block;
+
+    /* slow but cast-align */
+    memcpy(src.c, buffer, sizeof(sha1_byte) * 64);
+    block = &src;
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+}
+
+
+/* SHA1_Init - Initialize new context */
+void SHA1_Init(SHA_CTX* context) {
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+/* Run your data through this. */
+void SHA1_Update(SHA_CTX *context, sha1_byte *data, unsigned int len) {
+    unsigned int i, j;
+
+    j = (context->count[0] >> 3) & 63;
+    if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
+    context->count[1] += (len >> 29);
+    if ((j + len) > 63) {
+        memcpy(&context->buffer[j], data, (i = 64-j));
+        SHA1_Transform(context->state, context->buffer);
+        for ( ; i + 63 < len; i += 64) {
+            SHA1_Transform(context->state, &data[i]);
+        }
+        j = 0;
+    }
+    else i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+}
+
+
+/* Add padding and return the message digest. */
+void SHA1_Final(sha1_byte digest[SHA1_DIGEST_LENGTH], SHA_CTX *context) {
+    sha1_quadbyte i, j;
+    sha1_byte finalcount[8];
+
+    for (i = 0; i < 8; i++) {
+        finalcount[i] = (sha1_byte)((context->count[(i >= 4 ? 0 : 1)]
+         >> ((3-(i & 3)) * 8) ) & 255);  /* Endian independent */
+    }
+    SHA1_Update(context, (sha1_byte *)"\200", 1);
+    while ((context->count[0] & 504) != 448) {
+        SHA1_Update(context, (sha1_byte *)"\0", 1);
+    }
+    /* Should cause a SHA1_Transform() */
+    SHA1_Update(context, finalcount, 8);
+    for (i = 0; i < SHA1_DIGEST_LENGTH; i++) {
+        digest[i] = (sha1_byte)
+         ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
+    }
+    /* Wipe variables */
+    i = j = 0;
+    memset(context->buffer, 0, SHA1_BLOCK_LENGTH);
+    memset(context->state, 0, SHA1_DIGEST_LENGTH);
+    memset(context->count, 0, 8);
+    memset(&finalcount, 0, 8);
+}
+
+unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md) {
+    SHA_CTX ctx;
+    SHA1_Init(&ctx);
+    SHA1_Update(&ctx, d, (unsigned int)n);
+    SHA1_Final(md, &ctx);
+    return md;
+}
+
+#endif
diff --git a/src/algo_sha1.h b/src/algo_sha1.h
new file mode 100644
index 00000000..8c3ec35c
--- /dev/null
+++ b/src/algo_sha1.h
@@ -0,0 +1,84 @@
+#ifndef INCLUDED_ALGO_SHA1_H
+#define INCLUDED_ALGO_SHA1_H
+#include "first.h"
+
+#if defined HAVE_LIBSSL && defined HAVE_OPENSSL_SSL_H
+
+#include <openssl/sha.h>
+
+#else
+
+/*
+ * sha.h
+ *
+ * Originally taken from the public domain SHA1 implementation
+ * written by by Steve Reid <steve@edmweb.com>
+ *
+ * Modified by Aaron D. Gifford <agifford@infowest.com>
+ *
+ * NO COPYRIGHT - THIS IS 100% IN THE PUBLIC DOMAIN
+ *
+ * The original unmodified version is available at:
+ *    ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
+/* Make sure you define these types for your architecture: */
+typedef uint32_t sha1_quadbyte;         /* 4 byte type */
+typedef unsigned char sha1_byte;        /* single byte type */
+
+#define SHA1_BLOCK_LENGTH   64
+#define SHA1_DIGEST_LENGTH  20
+/*(added for lighttpd)*/
+#define SHA_DIGEST_LENGTH SHA1_DIGEST_LENGTH
+
+/* The SHA1 structure: */
+typedef struct _SHA_CTX {
+    sha1_quadbyte state[5];
+    sha1_quadbyte count[2];
+    sha1_byte     buffer[SHA1_BLOCK_LENGTH];
+} SHA_CTX;
+
+#ifndef NOPROTO
+void SHA1_Init(SHA_CTX *context);
+void SHA1_Update(SHA_CTX *context, sha1_byte *data, unsigned int len);
+void SHA1_Final(sha1_byte digest[SHA1_DIGEST_LENGTH], SHA_CTX *context);
+/*(added for lighttpd)*/
+unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md);
+#else
+void SHA1_Init();
+void SHA1_Update();
+void SHA1_Final();
+/*(added for lighttpd)*/
+unsigned char *SHA1();
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#endif
diff --git a/src/mod_authn_file.c b/src/mod_authn_file.c
index b5054fb4..c7cff52e 100644
--- a/src/mod_authn_file.c
+++ b/src/mod_authn_file.c
@@ -19,9 +19,7 @@
 #endif
 
 #ifdef USE_OPENSSL_CRYPTO
-#include "base64.h"
 #include <openssl/md4.h>
-#include <openssl/sha.h>
 #endif
 
 #include "safe_memclear.h"
@@ -34,6 +32,7 @@
 #include "log.h"
 #include "response.h"
 
+#include "algo_sha1.h"
 #include "base64.h"
 #include "md5.h"
 
@@ -597,7 +596,6 @@ static void apr_md5_encode(const char *pw, const char *salt, char *result, size_
     apr_cpystrn(result, passwd, nbytes - 1);
 }
 
-#ifdef USE_OPENSSL_CRYPTO
 static void apr_sha_encode(const char *pw, char *result, size_t nbytes) {
     unsigned char digest[20];
     size_t base64_written;
@@ -614,7 +612,6 @@ static void apr_sha_encode(const char *pw, char *result, size_t nbytes) {
     force_assert(base64_written == 28);
     result[5 + base64_written] = '\0'; /* terminate string */
 }
-#endif
 
 static handler_t mod_authn_file_htpasswd_basic(server *srv, connection *con, void *p_d, const http_auth_require_t *require, const buffer *username, const char *pw) {
     plugin_data *p = (plugin_data *)p_d;
@@ -632,12 +629,10 @@ static handler_t mod_authn_file_htpasswd_basic(server *srv, connection *con, voi
             apr_md5_encode(pw, password->ptr, sample, sizeof(sample));
             rc = strcmp(sample, password->ptr);
         }
-      #ifdef USE_OPENSSL_CRYPTO
         else if (0 == strncmp(password->ptr, "{SHA}", 5)) {
             apr_sha_encode(pw, sample, sizeof(sample));
             rc = strcmp(sample, password->ptr);
         }
-      #endif
       #if defined(HAVE_CRYPT_R) || defined(HAVE_CRYPT)
         /* a simple DES password is 2 + 11 characters. everything else should be longer. */
         else if (buffer_string_length(password) >= 13) {