diff options
Diffstat (limited to 'src/encode/uuencode.c')
| -rw-r--r-- | src/encode/uuencode.c | 130 |
1 files changed, 65 insertions, 65 deletions
diff --git a/src/encode/uuencode.c b/src/encode/uuencode.c index 6f92fb0..b692fdc 100644 --- a/src/encode/uuencode.c +++ b/src/encode/uuencode.c @@ -5,79 +5,79 @@ #include "../crypto.h" int uuechar_index(int c){ - return c + 32; + return c + 32; } int uueichar_index(int c){ - return c - 32; + return c - 32; } int de_uu(char* in2, char* out){ - int len = 0; - for(int i = 0; in2[i]!='\0'; i++) len++; - char in[len*2]; - sprintf(in," %s",in2); //padding byte to make things cleaner - - //char out[len]; - int skipped = 0; - for(int i = 0; i<len; i+=4){ - if((i - skipped*2)%60==0){ - i+=2; - skipped+=1; - }; - - uint8_t u1 = i>len?0:in[i]; - uint8_t u2 = i+1>len?0:in[i+1]; - uint8_t u3 = i+2>len?0:in[i+2]; - uint8_t u4 = i+3>len?0:in[i+3]; - - u1 = uueichar_index(u1); - u2 = uueichar_index(u2); - u3 = uueichar_index(u3); - u4 = uueichar_index(u4); - - uint8_t left = u1 << 2 | u2 >> 4; - uint8_t middle = u2 << 4 | u3 >> 2; - uint8_t right = u3 << 6 | u4; - if(u1 < 64 && u2 < 64){ - sprintf(out,"%s%c",out,left); - } - if(u2 < 64 && u3 < 64){ - sprintf(out,"%s%c",out,middle); - } - if(u3 < 64 && u4 < 64){ - sprintf(out,"%s%c",out,right); - } - + int len = 0; + for(int i = 0; in2[i]!='\0'; i++) len++; + char in[len*2]; + sprintf(in," %s",in2); //padding byte to make things cleaner + + //char out[len]; + int skipped = 0; + for(int i = 0; i<len; i+=4){ + if((i - skipped*2)%60==0){ + i+=2; + skipped+=1; + }; + + uint8_t u1 = i>len?0:in[i]; + uint8_t u2 = i+1>len?0:in[i+1]; + uint8_t u3 = i+2>len?0:in[i+2]; + uint8_t u4 = i+3>len?0:in[i+3]; + + u1 = uueichar_index(u1); + u2 = uueichar_index(u2); + u3 = uueichar_index(u3); + u4 = uueichar_index(u4); + + uint8_t left = u1 << 2 | u2 >> 4; + uint8_t middle = u2 << 4 | u3 >> 2; + uint8_t right = u3 << 6 | u4; + if(u1 < 64 && u2 < 64){ + sprintf(out,"%s%c",out,left); } - return 0; + if(u2 < 64 && u3 < 64){ + sprintf(out,"%s%c",out,middle); + } + if(u3 < 64 && u4 < 64){ + sprintf(out,"%s%c",out,right); + } + + } + return 0; } int en_uu(char* in, char* out){ - int len = 0; - for(int i = 0; in[i]!='\0'; i++) len++; - - for(int i = 0; i < len; i+=3){ - uint8_t f = i>len?0:in[i]; - uint8_t s = i+1>len?0:in[i+1]; - uint8_t t = i+2>len?0:in[i+2]; - - uint8_t i1 = f>>2; - uint8_t i2 = (uint8_t)(f<<6)>>2 | (s>>4); - uint8_t i3 = (uint8_t)(s<<4)>>2 | (t>>6); - uint8_t i4 = t & 0x3f; - - if(t==0)i4 = 64; - if(s==0)i3 = 64; - if(i / 3 * 4 % 60 == 0){ - if(i==0) sprintf(out,"%c",(len - i >= 45) ? 'M':uuechar_index(len - i)); - else sprintf(out,"%s\n%c",out,(len - i >= 45) ? 'M':uuechar_index(len - i)); - } - sprintf(out,"%s%c%c%c%c",out,uuechar_index(i1),uuechar_index(i2), - uuechar_index(i3),uuechar_index(i4)); + int len = 0; + for(int i = 0; in[i]!='\0'; i++) len++; + + for(int i = 0; i < len; i+=3){ + uint8_t f = i>len?0:in[i]; + uint8_t s = i+1>len?0:in[i+1]; + uint8_t t = i+2>len?0:in[i+2]; + + uint8_t i1 = f>>2; + uint8_t i2 = (uint8_t)(f<<6)>>2 | (s>>4); + uint8_t i3 = (uint8_t)(s<<4)>>2 | (t>>6); + uint8_t i4 = t & 0x3f; + + if(t==0)i4 = 64; + if(s==0)i3 = 64; + if(i / 3 * 4 % 60 == 0){ + if(i==0) sprintf(out,"%c",(len - i >= 45) ? 'M':uuechar_index(len - i)); + else sprintf(out,"%s\n%c",out,(len - i >= 45) ? 'M':uuechar_index(len - i)); } - sprintf(out,"%s\n`",out); - - return 0; + sprintf(out,"%s%c%c%c%c",out,uuechar_index(i1),uuechar_index(i2), + uuechar_index(i3),uuechar_index(i4)); + } + sprintf(out,"%s\n`",out); + + return 0; } @@ -87,7 +87,7 @@ int l_uuencode(lua_State* L){ const char* _a = lua_tolstring(L, 1, &len); char *a = calloc(len, sizeof * a); memcpy(a, _a, len); - + char* encode = calloc(len * 3,sizeof * encode); en_uu(a, encode); lua_pushstring(L, encode); @@ -102,7 +102,7 @@ int l_uudecode(lua_State* L){ const char* _a = lua_tolstring(L, 1, &len); char *a = calloc(len, sizeof * a); memcpy(a, _a, len); - + char* encode = calloc(len,sizeof * encode); de_uu(a, encode); lua_pushstring(L, encode); |