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#include "gnupgplugin.h"
// escape sequence type
struct escapesequence
{
char *sequence;
char *code;
};
// supported escape sequences
struct escapesequence escsequence[]=
{
{"\\n", "\n"},
{"\\r", "\r"},
{"\\t", "\t"}
};
// number of supported escape sequences
int escsequencecount=sizeof(escsequence)/sizeof(struct escapesequence);
void replace(char *atext, const char *apattern, const char *areplacement)
{
char *pos, *last;
long textsize;
long patternsize;
long replacementsize;
if (!atext || !apattern || !areplacement)
return;
pos=atext;
patternsize=strlen(apattern);
replacementsize=strlen(areplacement);
while (pos)
{
// textstelle suchen
last=pos;
pos=strstr(pos,apattern);
// etwas gefunden?
if (!pos)
break;
// laenge des textes ermitteln
textsize=strlen(last);
// platz schaffen
memmove
(
pos+replacementsize,
pos+patternsize,
textsize-((pos-last)+patternsize)+1
);
// ersetzen
strncpy(pos,areplacement,replacementsize);
pos+=replacementsize;
}
}
char *replace_dup(const char *atext, const char *apattern, const char *areplacement)
{
if (!atext || !apattern || !areplacement)
return NULL;
size_t patlen=strlen(apattern);
const char *pos=atext;
const char *ent;
int i;
for (i=0; (ent=strstr(pos,apattern)); (pos=ent+patlen),i++);
size_t srcsiz=strlen(atext)+1;
size_t replen=strlen(areplacement);
size_t dstsiz=srcsiz+(replen>patlen?(replen-patlen)*i:0);
char *dtext=(char*)mir_alloc(dstsiz);
if (!dtext)
return NULL;
memcpy(dtext,atext,srcsiz);
replace(dtext,apattern,areplacement);
return dtext;
}
char *getNextPart(char *aresult, char *atext, const char *aseparator)
// adds to aresult an item from atext up to aseparator
// returns pointer to next item (or NULL)
{
char *pos;
if (!aresult || !atext || !aseparator)
return NULL;
strcpy(aresult,"");
pos=strstr(atext,aseparator);
if (pos)
{
strncat(aresult,atext,pos-atext);
pos+=strlen(aseparator);
}
else
strcpy(aresult,atext);
return pos;
}
void getLastPart(char *aresult, char *atext)
{
if (aresult && atext)
strcpy(aresult,atext);
}
void appendText(char **abuffer, const char *atext, int atextsize)
{
int size;
if (!abuffer || !atext) return;
size=(*abuffer==NULL)?0:strlen(*abuffer);
size++; // abschliessende 0
if (atextsize==0)
atextsize=strlen(atext);
size+=atextsize;
*abuffer=(char*)mir_realloc(*abuffer,size);
strncat(*abuffer,atext,atextsize);
}
BOOL existsFile(const char *afilename)
{
if (!afilename || strlen(afilename)==0)
return FALSE;
FILE *handle=fopen(afilename,"r");
if (!handle)
return FALSE;
fclose(handle);
return TRUE;
}
BOOL writeToFile(char *afilename, const char *atext, bool isUnicode)
{
getTemporaryFileName(afilename);
FILE *handle=fopen(afilename,"wb");
if (!handle)
{
LogMessage("--- GnuPG.writeToFile: filename:",afilename,"\n");
return FALSE;
}
size_t binlen=strlen(atext)+1;
if (isUnicode) binlen*=(sizeof(wchar_t)+1);
size_t written=fwrite(atext,sizeof(char),binlen,handle);
fclose(handle);
return (written==binlen)? TRUE: FALSE;
}
long get_file_size(const char *afilename)
{
FILE *handle=fopen(afilename,"rb");
if (!handle)
return -1L;
fseek(handle,0,SEEK_END);
long filesize=ftell(handle);
fclose(handle);
return filesize;
}
BOOL fnFALSE(char **ppc) // free, nullify and return FALSE
{
if (!ppc) return FALSE;
if (*ppc) mir_free(*ppc);
*ppc=NULL;
return FALSE;
}
BOOL readFromFile(char **aresult, const char *afilename)
// *aresult MUST be mir_alloc memory block or NULL
// on error returns FALSE, frees and nullifies *aresult
// on success returns TRUE, caller later MUST free *aresult by hands.
// reads even binary files.
// *aresult contains the file contents appended by a byte set to 0.
{
if (!aresult) return FALSE;
if (!afilename) return fnFALSE(aresult);
if (!*aresult) *aresult=(char*)mir_alloc(1);
if (!*aresult) return FALSE;
FILE *handle=fopen(afilename,"rb");
if (!handle)
{
LogMessage("--- GnuPG.readFromFile: couldn't open handle for:\n",afilename,"\n");
return fnFALSE(aresult);
}
fseek(handle,0,SEEK_END);
size_t filesize=ftell(handle);
if (filesize==-1L)
{
LogMessage("--- GnuPG.readFromFile: couldn't get filesize for:\n",afilename,"\n");
return fnFALSE(aresult);
}
fseek(handle,0,SEEK_SET);
*aresult=(char*)mir_realloc(*aresult,filesize+1);
if (!*aresult)
{
LogMessage("--- GnuPG.readFromFile: memory reallocation error for:\n",afilename,"\n");
return fnFALSE(aresult);
}
size_t read=fread(*aresult,sizeof(char),filesize,handle);
fclose(handle);
(*aresult)[filesize]='\0';
if (read!=filesize)
return fnFALSE(aresult);
return TRUE;
}
void getTemporaryFileName(char *aresult)
{
char name[filenamesize];
if (!aresult) return;
strcpy(aresult,gpgTempdir);
tmpnam(name);
strcat(aresult,name);
}
void quoteEscapeSequences(char *atext)
{
if (!atext) return;
for (int i=0; i<escsequencecount; i++)
replace(atext,escsequence[i].code,escsequence[i].sequence);
}
void unquoteEscapeSequences(char *atext)
{
if (!atext) return;
for (int i=0; i<escsequencecount; i++)
replace(atext,escsequence[i].sequence,escsequence[i].code);
}
/////////////////////////////////////////////////////////////////////////////////////////
// Unicode functions
char* u2a(const wchar_t *src)
{
int codepage=CallService(MS_LANGPACK_GETCODEPAGE,0,0);
int cbLen=WideCharToMultiByte(codepage,0,src,-1,NULL,0,NULL,NULL);
char *result=(char*)mir_alloc(cbLen+1);
if (!result)
return NULL;
WideCharToMultiByte(codepage,0,src,-1,result,cbLen,NULL,NULL);
result[cbLen]=0;
return result;
}
wchar_t* a2u(const char *src)
{
int codepage=CallService(MS_LANGPACK_GETCODEPAGE,0,0);
int cbLen=MultiByteToWideChar(codepage,0,src,-1,NULL,0);
wchar_t *result=(wchar_t*)mir_alloc(sizeof(wchar_t)*(cbLen+1));
if (!result)
return NULL;
MultiByteToWideChar(codepage,0,src,-1,result,cbLen);
result[cbLen]=0;
return result;
}
char *fixcrlf_dup(const char *buf)
{
if (!buf) return NULL;
char *freeofr=replace_dup(buf,"\r","");
if (freeofr)
{
char *tmp=replace_dup(freeofr,"\n",txtcrlf);
fnFALSE(&freeofr);
if (tmp)
return tmp;
}
return NULL;
}
char *makemix_dup(const char *buf)
// buf should be ASCIIZ
// returns newly allocated ASCIIZ+UCS2
{
if (!buf) return NULL;
int binsiz=strlen(buf)+1;
int ascsiz=binsiz;
binsiz=ascsiz*(sizeof(wchar_t)+1);
char *mix=(char*)mir_alloc(binsiz);
if (mix)
{
memcpy(mix,buf,ascsiz);
wchar_t *wc=a2u(mix);
if (!wc)
{
fnFALSE(&mix);
return NULL;
}
memcpy(mix+ascsiz,wc,ascsiz*sizeof(wchar_t));
mir_free(wc);
}
return mix;
}
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