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#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "ltrace.h"
#include "options.h"
static int display_char(int what);
static int display_string(enum tof type, struct process *proc, int arg_num);
static int display_stringN(int arg2, enum tof type, struct process *proc,
int arg_num);
static int display_unknown(enum tof type, struct process *proc, int arg_num);
static int display_format(enum tof type, struct process *proc, int arg_num);
int
display_arg(enum tof type, struct process *proc, int arg_num, enum arg_type at)
{
int tmp;
long arg;
switch (at) {
case ARGTYPE_VOID:
return 0;
case ARGTYPE_INT:
return fprintf(output, "%d",
(int)gimme_arg(type, proc, arg_num));
case ARGTYPE_UINT:
return fprintf(output, "%u",
(unsigned)gimme_arg(type, proc, arg_num));
case ARGTYPE_LONG:
if (proc->mask_32bit)
return fprintf(output, "%d",
(int)gimme_arg(type, proc, arg_num));
return fprintf(output, "%ld", gimme_arg(type, proc, arg_num));
case ARGTYPE_ULONG:
if (proc->mask_32bit)
return fprintf(output, "%u",
(unsigned)gimme_arg(type, proc,
arg_num));
return fprintf(output, "%lu",
(unsigned long)gimme_arg(type, proc, arg_num));
case ARGTYPE_OCTAL:
return fprintf(output, "0%o",
(unsigned)gimme_arg(type, proc, arg_num));
case ARGTYPE_CHAR:
tmp = fprintf(output, "'");
tmp += display_char((int)gimme_arg(type, proc, arg_num));
tmp += fprintf(output, "'");
return tmp;
case ARGTYPE_ADDR:
arg = gimme_arg(type, proc, arg_num);
if (!arg) {
return fprintf(output, "NULL");
} else {
return fprintf(output, "%p", (void *)arg);
}
case ARGTYPE_FORMAT:
return display_format(type, proc, arg_num);
case ARGTYPE_STRING:
return display_string(type, proc, arg_num);
case ARGTYPE_STRING0:
return display_stringN(0, type, proc, arg_num);
case ARGTYPE_STRING1:
return display_stringN(1, type, proc, arg_num);
case ARGTYPE_STRING2:
return display_stringN(2, type, proc, arg_num);
case ARGTYPE_STRING3:
return display_stringN(3, type, proc, arg_num);
case ARGTYPE_STRING4:
return display_stringN(4, type, proc, arg_num);
case ARGTYPE_STRING5:
return display_stringN(5, type, proc, arg_num);
case ARGTYPE_UNKNOWN:
default:
return display_unknown(type, proc, arg_num);
}
return fprintf(output, "?");
}
static int display_char(int what)
{
switch (what) {
case -1:
return fprintf(output, "EOF");
case '\r':
return fprintf(output, "\\r");
case '\n':
return fprintf(output, "\\n");
case '\t':
return fprintf(output, "\\t");
case '\b':
return fprintf(output, "\\b");
case '\\':
return fprintf(output, "\\\\");
default:
if ((what < 32) || (what > 126)) {
return fprintf(output, "\\%03o", (unsigned char)what);
} else {
return fprintf(output, "%c", what);
}
}
}
static int string_maxlength = INT_MAX;
#define MIN(a,b) (((a)<(b)) ? (a) : (b))
static int display_string(enum tof type, struct process *proc, int arg_num)
{
void *addr;
unsigned char *str1;
int i;
int len = 0;
addr = (void *)gimme_arg(type, proc, arg_num);
if (!addr) {
return fprintf(output, "NULL");
}
str1 = malloc(MIN(opt_s, string_maxlength) + 3);
if (!str1) {
return fprintf(output, "???");
}
umovestr(proc, addr, MIN(opt_s, string_maxlength) + 1, str1);
len = fprintf(output, "\"");
for (i = 0; i < MIN(opt_s, string_maxlength); i++) {
if (str1[i]) {
len += display_char(str1[i]);
} else {
break;
}
}
len += fprintf(output, "\"");
if (str1[i] && (opt_s <= string_maxlength)) {
len += fprintf(output, "...");
}
free(str1);
return len;
}
static int
display_stringN(int arg2, enum tof type, struct process *proc, int arg_num)
{
int a;
string_maxlength = gimme_arg(type, proc, arg2 - 1);
a = display_string(type, proc, arg_num);
string_maxlength = INT_MAX;
return a;
}
static int display_unknown(enum tof type, struct process *proc, int arg_num)
{
long tmp;
tmp = gimme_arg(type, proc, arg_num);
if (proc->mask_32bit) {
if ((int)tmp < 1000000 && (int)tmp > -1000000)
return fprintf(output, "%d", (int)tmp);
else
return fprintf(output, "%p", (void *)tmp);
} else if (tmp < 1000000 && tmp > -1000000) {
return fprintf(output, "%ld", tmp);
} else {
return fprintf(output, "%p", (void *)tmp);
}
}
static int display_format(enum tof type, struct process *proc, int arg_num)
{
void *addr;
unsigned char *str1;
int i;
int len = 0;
addr = (void *)gimme_arg(type, proc, arg_num);
if (!addr) {
return fprintf(output, "NULL");
}
str1 = malloc(MIN(opt_s, string_maxlength) + 3);
if (!str1) {
return fprintf(output, "???");
}
umovestr(proc, addr, MIN(opt_s, string_maxlength) + 1, str1);
len = fprintf(output, "\"");
for (i = 0; len < MIN(opt_s, string_maxlength) + 1; i++) {
if (str1[i]) {
len += display_char(str1[i]);
} else {
break;
}
}
len += fprintf(output, "\"");
if (str1[i] && (opt_s <= string_maxlength)) {
len += fprintf(output, "...");
}
for (i = 0; str1[i]; i++) {
if (str1[i] == '%') {
int is_long = 0;
while (1) {
unsigned char c = str1[++i];
if (c == '%') {
break;
} else if (!c) {
break;
} else if (strchr("lzZtj", c)) {
is_long++;
if (c == 'j')
is_long++;
if (is_long > 1
&& (sizeof(long) < sizeof(long long)
|| proc->mask_32bit)) {
len += fprintf(output, ", ...");
str1[i + 1] = '\0';
break;
}
} else if (c == 'd' || c == 'i') {
if (!is_long || proc->mask_32bit)
len +=
fprintf(output, ", %d",
(int)gimme_arg(type,
proc,
++arg_num));
else
len +=
fprintf(output, ", %ld",
gimme_arg(type,
proc,
++arg_num));
break;
} else if (c == 'u') {
if (!is_long || proc->mask_32bit)
len +=
fprintf(output, ", %u",
(int)gimme_arg(type,
proc,
++arg_num));
else
len +=
fprintf(output, ", %lu",
gimme_arg(type,
proc,
++arg_num));
break;
} else if (c == 'o') {
if (!is_long || proc->mask_32bit)
len +=
fprintf(output, ", 0%o",
(int)gimme_arg(type,
proc,
++arg_num));
else
len +=
fprintf(output, ", 0%lo",
gimme_arg(type,
proc,
++arg_num));
break;
} else if (c == 'x' || c == 'X') {
if (!is_long || proc->mask_32bit)
len +=
fprintf(output, ", %#x",
(int)gimme_arg(type,
proc,
++arg_num));
else
len +=
fprintf(output, ", %#lx",
gimme_arg(type,
proc,
++arg_num));
break;
} else if (strchr("eEfFgGaACS", c)
|| (is_long
&& (c == 'c' || c == 's'))) {
len += fprintf(output, ", ...");
str1[i + 1] = '\0';
break;
} else if (c == 'c') {
len += fprintf(output, ", '");
len +=
display_char((int)
gimme_arg(type, proc,
++arg_num));
len += fprintf(output, "'");
break;
} else if (c == 's') {
len += fprintf(output, ", ");
len +=
display_string(type, proc,
++arg_num);
break;
} else if (c == 'p' || c == 'n') {
len +=
fprintf(output, ", %p",
(void *)gimme_arg(type,
proc,
++arg_num));
break;
} else if (c == '*') {
len +=
fprintf(output, ", %d",
(int)gimme_arg(type, proc,
++arg_num));
}
}
}
}
free(str1);
return len;
}
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