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1 #include <stdio.h> |
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2 #include <stdlib.h> |
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3 #include <string.h> |
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4 #include <openssl/objects.h> |
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5 #include <openssl/comp.h> |
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6 |
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7 EXPORT_C COMP_CTX *COMP_CTX_new(COMP_METHOD *meth) |
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8 { |
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9 COMP_CTX *ret; |
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10 |
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11 if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL) |
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12 { |
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13 /* ZZZZZZZZZZZZZZZZ */ |
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14 return(NULL); |
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15 } |
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16 memset(ret,0,sizeof(COMP_CTX)); |
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17 ret->meth=meth; |
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18 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) |
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19 { |
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20 OPENSSL_free(ret); |
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21 ret=NULL; |
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22 } |
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23 return(ret); |
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24 } |
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25 |
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26 EXPORT_C void COMP_CTX_free(COMP_CTX *ctx) |
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27 { |
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28 if(ctx == NULL) |
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29 return; |
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30 |
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31 if (ctx->meth->finish != NULL) |
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32 ctx->meth->finish(ctx); |
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33 |
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34 OPENSSL_free(ctx); |
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35 } |
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36 |
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37 EXPORT_C int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, |
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38 unsigned char *in, int ilen) |
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39 { |
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40 int ret; |
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41 if (ctx->meth->compress == NULL) |
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42 { |
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43 /* ZZZZZZZZZZZZZZZZZ */ |
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44 return(-1); |
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45 } |
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46 ret=ctx->meth->compress(ctx,out,olen,in,ilen); |
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47 if (ret > 0) |
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48 { |
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49 ctx->compress_in+=ilen; |
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50 ctx->compress_out+=ret; |
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51 } |
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52 return(ret); |
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53 } |
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54 |
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55 EXPORT_C int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, |
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56 unsigned char *in, int ilen) |
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57 { |
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58 int ret; |
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59 |
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60 if (ctx->meth->expand == NULL) |
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61 { |
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62 /* ZZZZZZZZZZZZZZZZZ */ |
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63 return(-1); |
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64 } |
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65 ret=ctx->meth->expand(ctx,out,olen,in,ilen); |
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66 if (ret > 0) |
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67 { |
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68 ctx->expand_in+=ilen; |
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69 ctx->expand_out+=ret; |
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70 } |
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71 return(ret); |
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72 } |