diff options
| -rw-r--r-- | include/perk/perk.h | 6 | ||||
| -rw-r--r-- | project/common.mk | 1 | ||||
| -rw-r--r-- | src/output/pe_output_error.c | 158 |
3 files changed, 165 insertions, 0 deletions
diff --git a/include/perk/perk.h b/include/perk/perk.h index 5951fa6..6f0ee27 100644 --- a/include/perk/perk.h +++ b/include/perk/perk.h @@ -39,6 +39,10 @@ extern "C" { #define PERK_DRIVER_VERSION 0x0010 #define PERK_DRIVER_DRY_RUN 0x0020 +#define PERK_DRIVER_ANNOTATE_ALWAYS 0x1000 +#define PERK_DRIVER_ANNOTATE_NEVER 0x2000 +#define PERK_DRIVER_ANNOTATE_FULL 0x4000 + /* unit action flags */ #define PERK_ACTION_MAP_READWRITE 0x0001 @@ -197,6 +201,8 @@ perk_api void pe_free_unit_ctx (struct pe_unit_ctx *); perk_api int pe_main (int, char **, char **); perk_api int pe_output_export_symbols (const struct pe_image_meta *, const struct pe_common_ctx *, FILE *); perk_api int pe_output_import_libraries(const struct pe_image_meta *, const struct pe_common_ctx *, FILE *); +perk_api int pe_output_error_record (const struct pe_driver_ctx *, const struct pe_error_info *); +perk_api int pe_output_error_vector (const struct pe_driver_ctx *); /* high-level api */ perk_api int pe_map_raw_image (const struct pe_driver_ctx *, int fd, const char * path, int prot, struct pe_raw_image *); diff --git a/project/common.mk b/project/common.mk index 3857c62..74b307f 100644 --- a/project/common.mk +++ b/project/common.mk @@ -5,6 +5,7 @@ COMMON_SRCS = \ src/internal/perk_errinfo_impl.c \ src/logic/pe_get_image_meta.c \ src/logic/pe_map_raw_image.c \ + src/output/pe_output_error.c \ src/output/pe_output_export_symbols.c \ src/output/pe_output_import_libraries.c \ src/reader/pe_read_coff_header.c \ diff --git a/src/output/pe_output_error.c b/src/output/pe_output_error.c new file mode 100644 index 0000000..21843b0 --- /dev/null +++ b/src/output/pe_output_error.c @@ -0,0 +1,158 @@ +/***************************************************************/ +/* perk: PE Resource Kit */ +/* Copyright (C) 2015--2016 Z. Gilboa */ +/* Released under GPLv2 and GPLv3; see COPYING.PERK. */ +/***************************************************************/ + +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <perk/perk.h> + +static const char aclr_reset[] = "\x1b[0m"; +static const char aclr_bold[] = "\x1b[1m"; + +static const char aclr_green[] = "\x1b[32m"; +static const char aclr_blue[] = "\x1b[34m"; +static const char aclr_magenta[] = "\x1b[35m"; + +static const char * pe_output_error_header(const struct pe_error_info * erri) +{ + if (erri->flags & PERK_ERROR_CHILD) + return "exec error upon"; + + else if (erri->flags & PERK_ERROR_TOP_LEVEL) + return "error logged in"; + + else if (erri->flags & PERK_ERROR_NESTED) + return "< returned to >"; + + else + return "distorted state"; +} + +static const char * pe_output_strerror(const struct pe_error_info * erri) +{ + if (erri->flags & PERK_ERROR_CUSTOM) + return "flow error: unexpected condition or other"; + + else if (erri->flags & PERK_ERROR_NESTED) + return ""; + + else if (erri->flags & PERK_ERROR_CHILD) + return "(see child process error messages)"; + + else if (erri->syserror == ENOBUFS) + return "input error: string length exceeds buffer size."; + + else + return strerror(erri->syserror); +} + +static int pe_output_error_record_plain( + const struct pe_driver_ctx * dctx, + const struct pe_error_info * erri) +{ + const char * errdesc = pe_output_strerror(erri); + + if (fprintf(stderr,"%s: %s %s(), line %d%s%s.\n", + dctx->program, + pe_output_error_header(erri), + erri->function, + erri->line, + strlen(errdesc) ? ": " : "", + errdesc) < 0) + return -1; + + return fflush(stderr); +} + +static int pe_output_error_record_annotated( + const struct pe_driver_ctx * dctx, + const struct pe_error_info * erri) +{ + const char * errdesc = pe_output_strerror(erri); + + if (fprintf( + stderr, + "%s%s%s:%s %s%s%s %s%s%s()%s, %s%sline %d%s%s%s%s%s.\n", + + aclr_bold,aclr_magenta, + dctx->program, + aclr_reset, + + aclr_bold, + pe_output_error_header(erri), + aclr_reset, + + aclr_bold,aclr_blue, + erri->function, + aclr_reset, + + aclr_bold,aclr_green, + erri->line, + aclr_reset, + strlen(errdesc) ? ": " : "", + + aclr_bold, + pe_output_strerror(erri), + aclr_reset) < 0) + return -1; + + return fflush(stderr); +} + +int pe_output_error_record( + const struct pe_driver_ctx * dctx, + const struct pe_error_info * erri) +{ + if (dctx->cctx->drvflags & PERK_DRIVER_ANNOTATE_NEVER) + return pe_output_error_record_plain(dctx,erri); + + else if (dctx->cctx->drvflags & PERK_DRIVER_ANNOTATE_ALWAYS) + return pe_output_error_record_annotated(dctx,erri); + + else if (isatty(STDERR_FILENO)) + return pe_output_error_record_annotated(dctx,erri); + + else + return pe_output_error_record_plain(dctx,erri); +} + +static int pe_output_error_vector_plain(const struct pe_driver_ctx * dctx) +{ + struct pe_error_info ** perr; + + for (perr=dctx->errv; *perr; perr++) + if (pe_output_error_record_plain(dctx,*perr)) + return -1; + + return 0; +} + +static int pe_output_error_vector_annotated(const struct pe_driver_ctx * dctx) +{ + struct pe_error_info ** perr; + + for (perr=dctx->errv; *perr; perr++) + if (pe_output_error_record_annotated(dctx,*perr)) + return -1; + + return 0; +} + +int pe_output_error_vector(const struct pe_driver_ctx * dctx) +{ + if (dctx->cctx->drvflags & PERK_DRIVER_ANNOTATE_NEVER) + return pe_output_error_vector_plain(dctx); + + else if (dctx->cctx->drvflags & PERK_DRIVER_ANNOTATE_ALWAYS) + return pe_output_error_vector_annotated(dctx); + + else if (isatty(STDERR_FILENO)) + return pe_output_error_vector_annotated(dctx); + + else + return pe_output_error_vector_plain(dctx); +} |