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/*******************************************************************/
/* slibtool: a strong libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <time.h>
#include <locale.h>
#include <regex.h>
#include <inttypes.h>
#include <slibtool/slibtool.h>
#include <slibtool/slibtool_output.h>
#include "slibtool_driver_impl.h"
#include "slibtool_dprintf_impl.h"
#include "slibtool_errinfo_impl.h"
#include "slibtool_pecoff_impl.h"
#include "slibtool_ar_impl.h"
/********************************************************/
/* Generate a symbol mapfile (aka version script) that */
/* could be passed to the host linker. */
/* */
/* Since the symbol list is directly derived from the */
/* archive's armap member, prepending symbol names with */
/* an underscore (where relevant) is not necessary. */
/********************************************************/
static int slbt_ar_output_mapfile_impl(
const struct slbt_driver_ctx * dctx,
struct slbt_archive_meta_impl * mctx,
int fdout)
{
bool fsort;
bool fcoff;
bool fmach;
const char * dot;
const char * mark;
const char * regex;
const char ** symv;
const char ** symstrv;
regex_t regctx;
regmatch_t pmatch[2] = {{0,0},{0,0}};
char strbuf[4096];
fsort = !(dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_NOSORT);
fmach = slbt_host_objfmt_is_macho(dctx);
fmach |= (mctx->ofmtattr & AR_OBJECT_ATTR_MACHO);
fcoff = slbt_host_objfmt_is_coff(dctx);
fcoff |= (mctx->ofmtattr & AR_OBJECT_ATTR_COFF);
if (fcoff) {
if (slbt_dprintf(fdout,"EXPORTS\n") < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
} else if (fmach) {
if (slbt_dprintf(fdout,"# export_list, armap underscores\n") < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
} else {
if (slbt_dprintf(fdout,"{\n" "\t" "global:\n") < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
}
if (fsort && !mctx->mapstrv)
if (slbt_update_mapstrv(dctx,mctx) < 0)
return SLBT_NESTED_ERROR(dctx);
if ((regex = dctx->cctx->regex))
if (regcomp(®ctx,regex,REG_EXTENDED|REG_NEWLINE))
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
symstrv = fsort ? mctx->mapstrv : mctx->symstrv;
for (symv=symstrv; *symv; symv++) {
if (!fcoff || slbt_is_strong_coff_symbol(*symv)) {
if (!regex || !regexec(®ctx,*symv,1,pmatch,0)) {
if (fcoff) {
if (slbt_dprintf(fdout," %s\n",*symv) < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
} else if (fmach) {
if (slbt_dprintf(fdout,"%s\n",*symv) < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
} else {
if (slbt_dprintf(fdout,"\t\t%s;\n",*symv) < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
}
}
/* coff weak symbols: expsym = .weak.alias.strong */
} else if (fcoff && !strncmp(*symv,".weak.",6)) {
mark = &(*symv)[6];
dot = strchr(mark,'.');
strncpy(strbuf,mark,dot-mark);
strbuf[dot-mark] = '\0';
if (!regex || !regexec(®ctx,strbuf,1,pmatch,0))
if (slbt_dprintf(fdout," %s = %s\n",strbuf,++dot) < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
}
}
if (regex)
regfree(®ctx);
if (!fcoff && !fmach)
if (slbt_dprintf(fdout,"\n\t" "local:\n" "\t\t*;\n" "};\n") < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
return 0;
}
static int slbt_ar_create_mapfile_impl(
const struct slbt_archive_meta * meta,
const char * path,
mode_t mode)
{
int ret;
struct slbt_archive_meta_impl * mctx;
const struct slbt_driver_ctx * dctx;
struct slbt_fd_ctx fdctx;
int fdout;
mctx = slbt_archive_meta_ictx(meta);
dctx = (slbt_archive_meta_ictx(meta))->dctx;
if (slbt_lib_get_driver_fdctx(dctx,&fdctx) < 0)
return SLBT_NESTED_ERROR(dctx);
if (!meta->a_memberv)
return 0;
if (path) {
if ((fdout = openat(
fdctx.fdcwd,path,
O_WRONLY|O_CREAT|O_TRUNC,
mode)) < 0)
return SLBT_SYSTEM_ERROR(dctx,path);
} else {
fdout = fdctx.fdout;
}
ret = slbt_ar_output_mapfile_impl(
dctx,mctx,fdout);
if (path) {
close(fdout);
}
return ret;
}
int slbt_ar_create_mapfile(
const struct slbt_archive_meta * meta,
const char * path,
mode_t mode)
{
return slbt_ar_create_mapfile_impl(meta,path,mode);
}
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