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| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <mdso/mdso.h> |
| |
| #include "mdso_driver_impl.h" |
| #include "mdso_dprintf_impl.h" |
| |
| static const char aclr_reset[] = "\x1b[0m"; |
| static const char aclr_bold[] = "\x1b[1m"; |
| |
| static const char aclr_red[] = "\x1b[31m"; |
| static const char aclr_green[] = "\x1b[32m"; |
| static const char aclr_blue[] = "\x1b[34m"; |
| static const char aclr_magenta[] = "\x1b[35m"; |
| |
| static char const * const mdso_error_strings[MDSO_ERR_CAP] = { |
| [MDSO_ERR_FLOW_ERROR] = "flow error: unexpected condition or other", |
| [MDSO_ERR_FLEE_ERROR] = "flees and bugs and cats and mice", |
| [MDSO_ERR_NULL_CONTEXT] = "null driver or unit context", |
| [MDSO_ERR_NULL_SOURCE] = "source file does not define any symbols", |
| [MDSO_ERR_INVALID_NAME] = "invalid or missing import library archive name", |
| [MDSO_ERR_INVALID_DATA] = "invalid data (symbol name too long)", |
| [MDSO_ERR_INVALID_DSTDIR] = "invalid destination directory", |
| [MDSO_ERR_INVALID_CONTEXT] = "invalid driver or unit context", |
| [MDSO_ERR_INVALID_SOURCE] = "invalid symbol definition source file", |
| [MDSO_ERR_INVALID_VECTOR] = "invalid symbol vector, or vector too long", |
| [MDSO_ERR_SOURCE_SIZE_ZERO] = "cannot map an empty symbol definition source file", |
| }; |
| |
| static const char * mdso_output_error_header(const struct mdso_error_info * erri) |
| { |
| if (erri->eflags & MDSO_ERROR_CHILD) |
| return "exec error upon"; |
| |
| else if (erri->eflags & MDSO_ERROR_TOP_LEVEL) |
| return "error logged in"; |
| |
| else if (erri->eflags & MDSO_ERROR_NESTED) |
| return "< returned to >"; |
| |
| else |
| return "distorted state"; |
| } |
| |
| static const char * mdso_output_unit_header(const struct mdso_error_info * erri) |
| { |
| if (!(erri->eflags & MDSO_ERROR_CUSTOM)) |
| return "while opening"; |
| |
| else if (erri->elibcode == MDSO_ERR_SOURCE_SIZE_ZERO) |
| return "while mapping"; |
| |
| else |
| return "while parsing"; |
| } |
| |
| static const char * mdso_output_strerror( |
| const struct mdso_error_info * erri, |
| char (*errbuf)[256]) |
| { |
| if (erri->eflags & MDSO_ERROR_CUSTOM) |
| return ((erri->elibcode < 0) || (erri->elibcode >= MDSO_ERR_CAP)) |
| ? "internal error: please report to the maintainer" |
| : mdso_error_strings[erri->elibcode]; |
| |
| else if (erri->eflags & MDSO_ERROR_NESTED) |
| return ""; |
| |
| else if (erri->eflags & MDSO_ERROR_CHILD) |
| return "(see child process error messages)"; |
| |
| else if (erri->esyscode == ENOBUFS) |
| return "input error: string length exceeds buffer size."; |
| |
| else |
| return strerror_r(erri->esyscode,*errbuf,sizeof(*errbuf)) |
| ? "internal error: strerror_r(3) call failed" |
| : *errbuf; |
| } |
| |
| static int mdso_output_error_record_plain( |
| const struct mdso_driver_ctx * dctx, |
| const struct mdso_error_info * erri) |
| { |
| const char * epath; |
| char errbuf[256]; |
| |
| int fderr = mdso_driver_fderr(dctx); |
| const char * errdesc = mdso_output_strerror(erri,&errbuf); |
| |
| epath = erri->euctx |
| ? *erri->euctx->path |
| : erri->eunit; |
| |
| if (epath && !(erri->eflags & MDSO_ERROR_NESTED)) |
| if (mdso_dprintf( |
| fderr, |
| "%s: [%s] '%s':\n", |
| dctx->program, |
| mdso_output_unit_header(erri), |
| epath) < 0) |
| return -1; |
| |
| if (mdso_dprintf( |
| fderr, |
| "%s: %s %s(), line %d%s%s.\n", |
| dctx->program, |
| mdso_output_error_header(erri), |
| erri->efunction, |
| erri->eline, |
| strlen(errdesc) ? ": " : "", |
| errdesc) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int mdso_output_error_record_annotated( |
| const struct mdso_driver_ctx * dctx, |
| const struct mdso_error_info * erri) |
| { |
| const char * epath; |
| char errbuf[256]; |
| |
| int fderr = mdso_driver_fderr(dctx); |
| const char * errdesc = mdso_output_strerror(erri,&errbuf); |
| |
| epath = erri->euctx |
| ? *erri->euctx->path |
| : erri->eunit; |
| |
| if (epath && !(erri->eflags & MDSO_ERROR_NESTED)) |
| if (mdso_dprintf( |
| fderr, |
| "%s%s%s:%s %s[%s]%s %s%s'%s'%s:\n", |
| |
| aclr_bold,aclr_magenta, |
| dctx->program, |
| aclr_reset, |
| |
| aclr_bold, |
| mdso_output_unit_header(erri), |
| aclr_reset, |
| |
| aclr_bold,aclr_red, |
| epath, |
| aclr_reset) < 0) |
| return -1; |
| |
| if (mdso_dprintf( |
| fderr, |
| "%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, |
| mdso_output_error_header(erri), |
| aclr_reset, |
| |
| aclr_bold,aclr_blue, |
| erri->efunction, |
| aclr_reset, |
| |
| aclr_bold,aclr_green, |
| erri->eline, |
| aclr_reset, |
| strlen(errdesc) ? ": " : "", |
| |
| aclr_bold, |
| errdesc, |
| aclr_reset) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int mdso_output_error_record( |
| const struct mdso_driver_ctx * dctx, |
| const struct mdso_error_info * erri) |
| { |
| if (dctx->cctx->drvflags & MDSO_DRIVER_ANNOTATE_NEVER) |
| return mdso_output_error_record_plain(dctx,erri); |
| |
| else if (dctx->cctx->drvflags & MDSO_DRIVER_ANNOTATE_ALWAYS) |
| return mdso_output_error_record_annotated(dctx,erri); |
| |
| else if (isatty(mdso_driver_fderr(dctx))) |
| return mdso_output_error_record_annotated(dctx,erri); |
| |
| else |
| return mdso_output_error_record_plain(dctx,erri); |
| } |
| |
| static int mdso_output_error_vector_plain(const struct mdso_driver_ctx * dctx) |
| { |
| struct mdso_error_info ** perr; |
| |
| for (perr=dctx->errv; *perr; perr++) |
| if (mdso_output_error_record_plain(dctx,*perr)) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int mdso_output_error_vector_annotated(const struct mdso_driver_ctx * dctx) |
| { |
| struct mdso_error_info ** perr; |
| |
| for (perr=dctx->errv; *perr; perr++) |
| if (mdso_output_error_record_annotated(dctx,*perr)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int mdso_output_error_vector(const struct mdso_driver_ctx * dctx) |
| { |
| if (dctx->cctx->drvflags & MDSO_DRIVER_ANNOTATE_NEVER) |
| return mdso_output_error_vector_plain(dctx); |
| |
| else if (dctx->cctx->drvflags & MDSO_DRIVER_ANNOTATE_ALWAYS) |
| return mdso_output_error_vector_annotated(dctx); |
| |
| else if (isatty(mdso_driver_fderr(dctx))) |
| return mdso_output_error_vector_annotated(dctx); |
| |
| else |
| return mdso_output_error_vector_plain(dctx); |
| } |