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16
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1
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2 /* Taken from LibStrfunc v7.3 */
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3
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4 #include <stdio.h>
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5 #include <ctype.h>
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6 #include <stdlib.h>
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7 #include "libstrfunc.h"
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8
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9
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10 static unsigned char _sf_uc_ib[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/==";
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11
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43
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12 char *base64_encode(void *data, size_t size) {
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13 char *output;
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14 register char *ou;
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15 register unsigned char *p=(unsigned char *)data;
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16 register void * dte = (void*)((char*)data + size);
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17 register int nc=0;
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16
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18
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43
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19 if ( data == NULL || size == 0 ) return NULL;
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36
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20
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43
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21 ou = output = (char *)malloc(size / 3 * 4 + (size / 57) + 5);
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22 if(!output) return NULL;
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36
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23
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43
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24 while((char *)dte - (char *)p >= 3) {
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25 unsigned char x = p[0];
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26 unsigned char y = p[1];
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27 unsigned char z = p[2];
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28 ou[0] = _sf_uc_ib[ x >> 2 ];
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29 ou[1] = _sf_uc_ib[ ((x & 0x03) << 4) | (y >> 4) ];
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30 ou[2] = _sf_uc_ib[ ((y & 0x0F) << 2) | (z >> 6) ];
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31 ou[3] = _sf_uc_ib[ z & 0x3F ];
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32 p+=3;
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33 ou+=4;
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34 nc+=4;
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35 if(!(nc % 76)) *ou++='\n';
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36 };
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37 if ((char *)dte - (char *)p == 2) {
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38 *ou++ = _sf_uc_ib[ *p >> 2 ];
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39 *ou++ = _sf_uc_ib[ ((*p & 0x03) << 4) | (p[1] >> 4) ];
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40 *ou++ = _sf_uc_ib[ ((p[1] & 0x0F) << 2) ];
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41 *ou++ = '=';
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42 } else if((char *)dte - (char *)p == 1) {
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43 *ou++ = _sf_uc_ib[ *p >> 2 ];
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44 *ou++ = _sf_uc_ib[ ((*p & 0x03) << 4) ];
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45 *ou++ = '=';
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46 *ou++ = '=';
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47 };
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36
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48
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43
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49 *ou=0;
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36
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50
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43
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51 return output;
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16
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52 };
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53
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43
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54
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55 void hexdump(char *hbuf, int start, int stop, int ascii) /* {{{ HexDump all or a part of some buffer */
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56 {
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57 char c;
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58 int diff,i;
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59
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60 while (start < stop ) {
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61 diff = stop - start;
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62 if (diff > 16) diff = 16;
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63
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64 fprintf(stderr, ":%08X ",start);
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65
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66 for (i = 0; i < diff; i++) {
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67 if( 8 == i ) fprintf( stderr, " " );
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68 fprintf(stderr, "%02X ",(unsigned char)*(hbuf+start+i));
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69 }
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70 if (ascii) {
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71 for (i = diff; i < 16; i++) fprintf(stderr, " ");
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72 for (i = 0; i < diff; i++) {
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73 c = *(hbuf+start+i);
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74 fprintf(stderr, "%c", isprint(c) ? c : '.');
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75 }
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76 }
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77 fprintf(stderr, "\n");
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78 start += 16;
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79 }
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80 }
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