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iconv: Avoid writable data and relocations in ISO646

This commit is contained in:
Florian Weimer 2016-10-26 11:43:21 +02:00
parent b9deb8ce2a
commit 261e6758e7
2 changed files with 50 additions and 40 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2016-10-26 Florian Weimer <fweimer@redhat.com>
* iconvdata/iso646.c (enum variant): Drop illegal_var.
(names): Turn into concatenation of strings.
(gconv_init): Adapt iteration over names.
2016-10-26 Florian Weimer <fweimer@redhat.com>
* iconvdata/ibm930.h (__ucs4_to_ibm930sb): Remove indirection and

84
iconvdata/iso646.c
View File

@ -60,9 +60,9 @@ enum direction
from_iso646
};
/* See names below, must be in the same order. */
enum variant
{
illegal_var,
GB, /* BS_4730 */
CA, /* CSA_Z243.4-1985-1 */
CA2, /* CSA_Z243.4-1985-2 */
@ -88,33 +88,33 @@ enum variant
SE2 /* SEN_850200_C */
};
static const char *names[] =
{
[GB] = "BS_4730//",
[CA] = "CSA_Z243.4-1985-1//",
[CA2] = "CSA_Z243.4-1985-2//",
[DE] = "DIN_66003//",
[DK] = "DS_2089//",
[ES] = "ES//",
[ES2] = "ES2//",
[CN] = "GB_1988-80//",
[IT] = "IT//",
[JP] = "JIS_C6220-1969-RO//",
[JP_OCR_B] = "JIS_C6229-1984-B//",
[YU] = "JUS_I.B1.002//",
[KR] = "KSC5636//",
[HU] = "MSZ_7795.3//",
[CU] = "NC_NC00-10//",
[FR] = "NF_Z_62-010//",
[FR1] = "NF_Z_62-010_1973//", /* Note that we don't have the parenthesis
in the name. */
[NO] = "NS_4551-1//",
[NO2] = "NS_4551-2//",
[PT] = "PT//",
[PT2] = "PT2//",
[SE] = "SEN_850200_B//",
[SE2] = "SEN_850200_C//"
};
/* Must be in the same order as enum variant above. */
static const char names[] =
"BS_4730//\0"
"CSA_Z243.4-1985-1//\0"
"CSA_Z243.4-1985-2//\0"
"DIN_66003//\0"
"DS_2089//\0"
"ES//\0"
"ES2//\0"
"GB_1988-80//\0"
"IT//\0"
"JIS_C6220-1969-RO//\0"
"JIS_C6229-1984-B//\0"
"JUS_I.B1.002//\0"
"KSC5636//\0"
"MSZ_7795.3//\0"
"NC_NC00-10//\0"
"NF_Z_62-010//\0"
"NF_Z_62-010_1973//\0" /* Note that we don't have the parenthesis in
the name. */
"NS_4551-1//\0"
"NS_4551-2//\0"
"PT//\0"
"PT2//\0"
"SEN_850200_B//\0"
"SEN_850200_C//\0"
"\0";
struct iso646_data
{
@ -130,20 +130,24 @@ gconv_init (struct __gconv_step *step)
/* Determine which direction. */
struct iso646_data *new_data;
enum direction dir = illegal_dir;
enum variant var;
int result;
for (var = sizeof (names) / sizeof (names[0]) - 1; var > illegal_var; --var)
if (__strcasecmp (step->__from_name, names[var]) == 0)
{
dir = from_iso646;
break;
}
else if (__strcasecmp (step->__to_name, names[var]) == 0)
{
dir = to_iso646;
break;
}
enum variant var = 0;
for (const char *name = names; *name != '\0';
name = __rawmemchr (name, '\0') + 1)
{
if (__strcasecmp (step->__from_name, name) == 0)
{
dir = from_iso646;
break;
}
else if (__strcasecmp (step->__to_name, name) == 0)
{
dir = to_iso646;
break;
}
++var;
}
result = __GCONV_NOCONV;
if (__builtin_expect (dir, from_iso646) != illegal_dir)