Add base64_encode() to utils

src/lib/cache.c

@@ -8,6 +8,7 @@
 #include "cache.h"
 #include "utils.h"
 #include "compress.h"
+
 #include <stdio.h>
 #include <magic.h>
 #include <sys/ipc.h>

src/lib/compress.c

@@ -6,6 +6,7 @@
  */
 
 #include "compress.h"
+
 #include <malloc.h>
 #include <errno.h>
 

src/lib/config.c

@@ -7,6 +7,7 @@
 
 #include "config.h"
 #include "utils.h"
+
 #include <stdio.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>

src/lib/fastcgi.c

@@ -9,6 +9,7 @@
 #include "utils.h"
 #include "compress.h"
 #include "../server.h"
+
 #include <sys/un.h>
 #include <sys/socket.h>
 #include <errno.h>

src/lib/http.c

@@ -8,6 +8,7 @@
 #include "http.h"
 #include "utils.h"
 #include "compress.h"
+
 #include <string.h>
 
 void http_to_camel_case(char *str, int mode) {

src/lib/rev_proxy.c

@@ -9,6 +9,7 @@
 #include "utils.h"
 #include "compress.h"
 #include "../server.h"
+
 #include <openssl/ssl.h>
 #include <string.h>
 #include <errno.h>

src/lib/sock.c

@@ -6,6 +6,7 @@
  */
 
 #include "sock.h"
+
 #include <openssl/err.h>
 #include <openssl/ssl.h>
 #include <string.h>

src/lib/uri.c

@@ -7,6 +7,7 @@
 
 #include "uri.h"
 #include "utils.h"
+
 #include <stdlib.h>
 #include <string.h>
 

src/lib/utils.c

@@ -6,6 +6,7 @@
  */
 
 #include "utils.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
@@ -172,3 +173,24 @@ int str_trim_lws(char **start, char **end) {
     (*end)++;
     return 0;
 }
+
+int base64_encode(void *data, unsigned long data_len, char *output, unsigned long *output_len) {
+    unsigned long out_len = 4 * ((data_len + 2) / 3);
+    if (output_len != NULL) *output_len = out_len;
+
+    for (int i = 0, j = 0; i < data_len;) {
+        unsigned int octet_a = (i < data_len) ? ((unsigned char *) data)[i++] : 0;
+        unsigned int octet_b = (i < data_len) ? ((unsigned char *) data)[i++] : 0;
+        unsigned int octet_c = (i < data_len) ? ((unsigned char *) data)[i++] : 0;
+        unsigned int triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
+        output[j++] = base64_encode_table[(triple >> 3 * 6) & 0x3F];
+        output[j++] = base64_encode_table[(triple >> 2 * 6) & 0x3F];
+        output[j++] = base64_encode_table[(triple >> 1 * 6) & 0x3F];
+        output[j++] = base64_encode_table[(triple >> 0 * 6) & 0x3F];
+    }
+
+    for (int i = 0; i < base64_mod_table[data_len % 3]; i++)
+        output[out_len - 1 - i] = '=';
+
+    return 0;
+}

src/lib/utils.h

@@ -20,6 +20,10 @@
 
 extern char *log_prefix;
 
+static const char base64_encode_table[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static const int base64_mod_table[3] = {0, 2, 1};
+
+
 #define out_1(fmt) fprintf(stdout, "%s" fmt "\n", log_prefix)
 #define out_2(fmt, args...) fprintf(stdout, "%s" fmt "\n", log_prefix, args)
 
@@ -46,4 +50,6 @@ int str_trim(char **start, char **end);
 
 int str_trim_lws(char **start, char **end);
 
+int base64_encode(void *data, unsigned long data_len, char *output, unsigned long *output_len);
+
 #endif //NECRONDA_SERVER_UTILS_H